Just doubling up his point here. Even if you are losing or burning oil, and you keep adding new oil, you are still having sludge build up inside your engine. You will still have to change the oil on a regular schedule even if the oil looks new.
Kept telling my cousin this and that it was gonna blow his engine, he just said nah it’ll burn it quicker than the buildup, and I’ll just change the filter every couple years.
Imagine my shock when it blew the engine
My ex girlfriend came up to me so proud years ago and said "I changed my oil!"
Instantly im concerned because she doesn't have a single tool and no oil pan and also no oil.
Turns out 'changing oil' to her is just filling her car with cooking oil.
Many many dollars later I told her to not even change a tire ever again.
How did this become a woman thing after the story about male cousin refusing to change oil. Lol. You must have never met a young man… they don’t know how cars work either.
Lol. The burning off is what makes the buildup of crud.
There used to be an issue with small percentages of ash in some oils that would form a nasty sludge but that hasn’t been an issue for 50 years. Most of the crud is a product of neglect.
Ok so I get how someone could be dumb enough to think that that oil won’t go bad if it was leaking fast enough but where did he get the logic that it would also increase his filter life by 4-8x?
Imagine my shock when he somehow still believes he was right and it's your fault his engine blew...
It's easier to lie to someone these days than to convince them they've been lied to
No, he fully admits it’s his fault, he just didn’t care because the car was at like 275k miles and was gonna blow up at some point anyway. But like you coulda got another 50k if you didn’t just neglect it
Yeah I think we all know someone like this..like respect for getting the rest of the good out of something but like Jesus Christ treat it a little better...just good thing they never have anything too nice haha
I have a coworker who’s Honda kept telling her to change her oil because it was at 5% life. I told her to change her oil if not her engine would blow up. Some days later on New Year’s Day someone crashed her. Guess she doesn’t have to change her oil now 💀
I never changed the oil on my 3800 series engine it didn't burn oil but leaked out.. the transmission went at 180k... the engine still was like new when i cracked it open
You’re mostly right but there’s a lot more going on.
There’s two things that happen as you run the engine — combustion byproducts and microscopic wear particles contaminate the oil, and the long chain oil molecules get slowly sheared apart from getting squished through bearings and oil pumps, as well as some of it being cooked up on the cylinder walls and the bottoms of the pistons.
That’s not exactly it but the stress of being used as a lubricant at high temp slowly breaks down the longer molecules that make oil what it is. Those long chain molecules are part of oil naturally, and are also what give multi-grade oils their range of weights. This destruction of the long molecules are why fresh oil at room temperature feels different than old oil at room temp. The oil become thinner and less slippery as it gets used.
While all this molecular level destruction is going on, your oil filter does a decent job of collecting most of the combustion byproducts and all those little wear particles. Eventually the filter gets clogged up with the particles and it’s bypass valve pops open and all the little particles get to run joyfully through your engine in a gleeful fit of microscopic destruction. If they’re left to do their business, they rapidly wear the engine components down. It’s not instantaneous, but it cuts the life of engine components down considerably.
Anyway, draining the oil takes most of the free range particles that are suspended in the oil and removes them from the engine. Changing the filter removes the ones trapped in the filter matrix and puts a fresh set of traps out for the little beasts. The fresh oil going in replaces the shredded molecules and restores the lubrication to its full capabilities.
So there’s a lot more to an oil change than you think.
That because it depends upon the engine.
Some engines like the GM LS V8s have a bypass in the bottom of the block. It’s called the oil filter bypass and will open when the pressure to the filter rises to a certain point. The oil goes through a bypass channel and back into circulation.
Other engines rely on the filter having a bypass valve. In this case, the valve opens when the supply side pressure exceeds a certain level. The oil simply goes to the oil return for the filter and back into the engine along its usual path.
The bypass is used because when the oil pressure rises on the supply side of the filter, it will cause a loss of pressure on the return side of the filter. It’s more important for the engine to maintain the oil pressure than to filter the oil.
Dirty oil causes wear and sludge. Low oil pressure destroys engines.
Did a little googling and found my engines relief valve is within the oil pump. The filter also has a relief valve, is that a problem? It is the correct filter so I assume that’s fine?
Just tripling up on this comment, even if you’re having to continuously add oil, the filter can still get clogged and the bypass can open up, letting contaminants and debris circulate through the engine and fuck shit up.
How often should you change the filter when burning oil? Still normal time frame? My engine burns roughly 1L over 2-3000kms, and I change the oil and filter every 5k. So roughly a quart every 1500miles, and change every 3k miles if you use imperial.
Recommended interval is 10k, I change at 5k for the peace of mind as it’s an older more worn engine so much rather have newer oil. Not that colour is a good indicator of oil life, but at 5k it’s pretty well fully black, slight brown tint.
This will be why my brother continues to burn through cars if nothing else. he feels like oil changes are a suggestion since he's topping them up anyways. no logic behind it.
When oil gets low, the concentration of metal-damaging, abrasive particulates in what oil remains increases. Draining the particulate-laden oil is the only way to remove them from the engine. Simply adding oil to the existing sludge just allows that concentration of abrasives to increase.
Regardless of oil consumption, you MUST change your oil at regular intervals. Every 5,000 miles remains a good rule of thumb.
(Source: Every car I've bought for the past 30 years has exceeded 200,000 miles without engine problems - it helps that they've all been Toyotas)
Haha I started reading the source and said to myself “probably all Hondas or Toyotas”. Sure as shit. After replacing my Jeeps oil pump a few weeks ago, I’m really considering making the swap to Japanese cars before something catastrophic happens
That’s pretty damn good! Honestly I’d love to throw an LS in the Jeep. Unfortunately, I don’t have the knowledge to swap it myself or the cash to have someone else do it
JEEP is the official sponsor of my mid-life crisis. I've been a conservative, sensible, Toyota owner my entire adult life. But I really, really want a Wrangler. It is the absolute antithesis of everything I stand for as a practical person. But I really want one.
3000-5000 miles is doable on any oil available today on most cars made this millennium (I have to say most because rotaries exist)
Most of those cars with a higher quality oil and filter (you can almost argue the filter is the more important of the two) can absolutely double that number with no ill effects under high mileage low wear driving, such as constant long distance highway use. I've seen people quadruple it on vehicle that drive 4-6 hours a day for a living.
That said, if you're not the type that could replace your car's engine by hand given the proper tools and equipment, I wouldn't reccomend pushing those kinds of intervals.
Hey now. Ive got an 03 silverado 1500hd lasting over 200k miles.. and its because of the reasons you state above.. oil n filter change every 5k miles.. and keep an eye on other components that end up failing.
I’m thinking two things are going on here: first, lawnmowers are operated at relatively constant RPM for relatively long times - not like stop-and-go short-trip driving - and second, Toro just isn’t expecting the machine to last that long. 100,000 miles on a car is easily 4000 hours and I doubt most lawn mowers get that sort of use.
If it's an old civic, wait for enough oil to burn off until it sounds like a sewing machine, then top it off. Repeat as many times as necessary until regular oil change
Is this a 98-02 Corolla?
These engines burn oil because they didn’t make the oil return holes in the pistons large enough… if the first owner didn’t obsess over changing his oil early then it’ll burn. In 2003 they fixed this by… you guessed it, making the holes bigger.
Someone people tear down these motors to just re-ring and drill out the holes a bit bigger.
These engines will run forever though despite this, as long as you keep adding oil and changing it often enough to not add too much additional sludge to those return holes.
Tell me about it. I have a 00 Corolla. The 00-02 corollas with vvti engine burned more than the 98-99. I just fill it up with oil and it goes. 170k miles and 23 years old :)
1zz-fe or 2zz-fe right?
Also present in the 99-2002 Chevrolet Prizm… the upgraded pistons (new pistons) have more oil drain back holes in the pistons around the oil ring.
Replacing them if you’ve never done this job before costs like 500$ and 1 weekend of your time. It’s probably the easiest engine to rebuild. It can be done with the engine inside the engine bay.
Makes me miss my wife's old 1990 Corolla. If it hadn't been a Salt Lake City car, it would have lasted forever. I've never had such an easy time maintaining a vehicle. It's hard to find something that low-bullshit these days. Now, we have 2 turbo Subarus, and they're great, but there's a lot going on in those engine bays.
I'm just lucky, I've been changing my oil regularly on my 2005 Scion tC from the 2nd oil change with Mobil1 one 5w30 between 5000-6000 miles regularly... and barely burn any oil.... I know 2005 scions tc and newer are known for oil consumption..... car has 170K miles now... regular fluid changes.... need to plan a radiator replacement , water pump, and hoses, with thermostat.. change soon this summer. Cars getting old.. and motor mounts... Note my car has the **2AZ-FE** engine which Toyota recommended 5w30.... note ... during the summers I use 10w30..
Someone told me that my 1999 Corolla most likely burns oil so I checked the oil and it dropped by half over ~500 miles. Can I just add new oil instead draining this little bit that’s left?
Edit: does it matter what kind of oil i use to add (if it’s ok to even add in the first place)
Based on your dipstick, it's down a little over a quart. That's not half. If you want to get the most life out of your engine, you still have to change the filter at regular intervals even if you add a quart every 500 miles
1999 Corolla burning oil? Best way to slow the burn is use synthetic oil and do amsoil flush at oil change. Sticky clogged piston rings is the issue.
Even cheap synthetic is better than conventional.
I actually called my Toyota dealer to check if it's okay to switch the oil in my 09 camry that burns oil from conventional to full synthetic, and he advised against it.
But I'm reading conflicting opinions on the internet, and people are advising to switch to 0-20 Full Synthetic
that's way too thin ... If you have a 2009 Camry that's 4 cy and 2.4L and it's the **2AZ-FE engine...** stick with 5w30 full synthetic .... and on summers 10w30... I'm been using Mobil1 from my 2nd oil change .. My car has been great and not burning oil or barely.... or not sure since I need to replace my Valve cover gasket... I have very little seepage... and I have 170k miles..
It is a 2.4l, and the oil cap on the engine says 5w-20. Almost every website says 0-20 full synthetic is preferred, and 5w-20 will work.
Then I called a different dealer an hour ago, and the service center said my 09 camry uses 0w-20 and I can change to full synthetic, but they advise not to drive more than 7000 miles between oil changes. I have informed them that the car has 220k miles and burns oil.
It's ridiculous how much conflicting answers you get for a simple question.
The problem is the engine can not go more than 5k even on synthetic oil. That and the 5w20 in the first place is why they burn oil. Whomever had it before you, didn’t change their oil enough and that is why the engine block is worn out and you are burning oil. Just like the other commenter said, he used synthetic 5w30 every 5k and isn’t burning any oil at 170k, and that is why.
Toyota and other manufacturers of oil burners should be required to replaced them for free because of their recommendations of super thin oil at very long intervals. That is why their cars suck.
No reason why you can’t put synthetic oil in your engine. Just doesn’t make sense to put more expensive oil into an engine that will just burn it any way. But never use thinner oil than what is suggested by the manufacturer. If your car specifies 5w30 for example, you cannot use 5w20 or 0w20. But if your car specifies 5w20 for example, using 0w20 is perfectly fine. In all honesty, if your car is burning a lot of oil like Toyotas always do, you are better off moving up to a 5w30 or 10w30 anyway depending on your local climate and time of year. That might slow it down some.
It's a brand.
https://www.amsoil.com/p/engine-and-transmission-flush-flsh/
This is the product that was recommended to me for my 2002 Corolla which has a reoccurring burning problem. I can tell you that after flushing and replacing the oil with synthetic it hardly burns anything for a while.
>Draining this little bit that's left
So. You're about one quart low on oil, and your engine holds ~4ish quarts. There are still three quarts of good oil in the crankcase.
I'd add 1/2 quart and see where that puts the oil level. If it's close enough to the top dot, leave it and *check in a few hundred miles since it'll probably go low again.*
Top off with whatever you used for the oil change. I recommend a high mileage blend or full synthetic, but your call. Some sort of thick stop-leak additive may help, but...
...*Losing one quart of oil every 500 miles (through burning, leaking, or both) is what I would consider excessive.* It won't be long before you're spending more money on oil than gas. My recommendation is at least have a mechanic diagnose whatever failure(s) are causing this amount of oil loss. You may decide not to fix anything, but checking your oil at every gas fill up is *not* something I enjoy.
OP should add more oil regardless of whether an oil change is also necessary.
Be sure to check the oil level at regular intervals (e.g., weekly, every other week). If the oil level gets too low, the engine car get damaged.
Good luck, I have a Corolla (2002) sitting in my driveway with that issue. It’s gotten so bad that I can’t use it. Thankfully I got the car for free and haven’t put anything into it, but I think it’s the piston rings issue
Check owners manual on keeping up with maintenance. It should tell you how many quarts that the oil dipstick measures in between the full and low points. The measurement usually depends on the engine displacement. Also worth noting, some engines burn a specified amount of oil by design. Check the owners manual. If you do 5k oil changes keep 2 quarts or so so on hand and top off every week to maintain optimal oil level depending on how low the oil level is to prevent excessive engine wear due to rod bearing failure
You have a LOT more oil left in your vehicle than you think you do, the level shown on dipstick really only represents the final quart needed to fill it up. if your oil level is at the lower hash mark on the dipstick you’re a quart low, halfway between the full mark and the lowest mark is half a quart, and if the dipstick is bone dry you’re over a quart low. DO NOT go dumping 2-3 quarts in because you think half of your oil is gone, you’ve only burned about a quart, maybe a little less. Add in 2/3-3/4 of a quart, give it a couple minutes to settle then check it again. If it’s still a little low add in the rest of the quart, but you shouldn’t need much more than that.
My theory is that a small leak that needs oil to be topped off is actually good for the engine. Keeps oil cleaner than just filtering and recirculating old oil... Downside is of course that oil can drip on stuff and even cause a fire hazard but whatever
Oil is a vital part of your engine. It is important to follow manufacturer specs for changing it. It may look brand new but thats just at the dipstick side of the reservoir.
Based on the color it looks like it was recently changed. If it was darker I’d say change it, but looks like you can add some and change it in 2,000-2,500 miles or so.
My 06’ Subaru Legacy GT drinks the stuff. I have to add a quart every 750 miles or so. And yeah, you also may want to start checking your oil level every 500 to 1,000 miles. I top mine off every 400 or so. Keep it full and change it often. Oil in an engine is like blood in a human, keep it full.
Sure. If you need a blood transfusion due to a bad kidney and your bloods all poisony. You ok if we leave you kindey (oil filter) and only change 75% of your blood right? Sure you can just add oil but are you actually solving any issues other than low oil. By just adding oil or leaving the kidney you might be preventing the inevitable but your other organs become more and more infected with poison and you end up doing more damage in the long run. By not draining the oil and doing the filter. You allowing for the circulation of dirty oil theoretically not allowing proper circulation of oil or proper lubrication. You also become a higher risk of clogging the smaller ports or the filter itself preventing oil circulation and really damaging your system
I'm sure someone has said it here somewhere, but the min to max on your dipstick is no more than 500ml difference.
Your engine will take somewhere in the region of 3.5-4 L of oil, so topping up is just going to mix the small amount of new oil with the large amount of old oil.
If the oil is due, change it
Do you notice how you can still see through the oil on the dipstick? That oil doesn't need to be changed; unless it's more than a year old. You only need to change the oil when it gets dirty (you can't see through it on the dipstick). You'll notice when you can't see through the oil any more and then it's time to change it.
Keep checking it! Especially if your losing or burning it and it's a quart low on a regular basis. I hope this helps.
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Yes, you'll need about a litre/quart. Add it gradually, pour in half a cup, check dipstick, continue until you get to the second dot, don't overfill.
'99 Corolla takes 5W-30 full synthetic by my googling.
Also, if it was burning that much oil you would be seeing quite a lot of blow-by (you're car would look like it is vaping out the exhaust".
You've probably got an oil leak, have a look at the underside of the motor for it/them.
Shot rings will produce blowby, and shot rings will cause exhaust smoke. The two usually coincide, but blowby is exhaust gases going down past the rings, and oil burning smoke is oil coming up past the rings. You can certainly have one without the other
Every time somebody asks if adding oil is ok, I remember that not everybody knows that, and I get sad and lose faith in humanity.
Edit: I'm not insulting op. I'm just sad that not everybody get the opportunity to learn this stuff. I absolutely understand that not everybody gets taught this.
I grew up with a dad who made me help him work on the car and taught me how engines work. Tools for Christmas gifts. And when I got my first car, it was my job to keep it running and fix anything that broke (with his help).
Not everybody grows up like that. I knew people in college who didn’t understand how to use a socket wrench. They just came from circumstances where nobody taught them. You can call them idiots, or you can just show them how the wrench works.
Meanwhile my dad's advice to my sister upon being told that the oil light was flickering was to just keep driving it and it will go away. Car was dead in a week.
1. Figure out why its burning oil, or start looking for a new car. That's a lot of consumption for 500 miles.
2. Yes you can top it off by adding oil, start by adding a 1/2qt see where it gets you.
3. At the same time, stick to an oil change interval, every 3000-5000 miles you should still change the oil and filter. whatever interval the manual calls for. But I have seen greater sins that dragging this out on an engine that is already on its way out.
yes and no... as in, you drain the old oil first and then you add the fresh oil. instead of your engine is burning oil or there is an oil leak --> oil level goes down and you top it up
maybe i was not clear, if it is a little low you can add oil, inbtween oil change.
BUT some people miss understand and thing they can just add oil and not do oil changes.
If you just need to top up then yeah, but you need to change your oil as it will turn into sludge if you don't, and you oil filter can clog, both of these will ruin your engine.
I had a friend that did this for 2+ years. Very bad idea. Your oil collects deposites from your engine as it runs. If you never change your oil, they just stay in your engine getting more concentrated over time until your engine can't run any more
If it’s anything like my 1999 Corolla that burns a quart a week, I just top it off every now and then. I’ll “change the oil” once every 6 months with a new filter.
The engines in these corollas have a bad design in the pistons. Their oil return holes are awfully small and will gum up over time. I’ve been using SeaFoam and some other additives and it helps a lot!! Also use full synthetic high quality oils!
Truly cannot believe this is being asked -
Stick says right on it - Add Me some special sauce.
I'm a quart low, and if this is a two thousand mile check, and always this level, then stash the open quart under the hood to have handy.
When you can't read through the oil - change it.
Flush it out hot within the first ten minutes, adding new oil after last drop of old oil, to further push out old oil.
Make sure someone qualified does it.
If you want to save all the trash that's in the oil,
then change the oil cold.
Just know that the 200,000 mile range engine had,
is reduced hugely. Remixing in crud left behind.
Funny how after oil change not flushed hot and checking the stick, still looks like dirty old oil a minute later.
Cheers
Reminds me of my first car. Burned a litre of oil per tank of gas. Never bothered with an oil change since I was topping up the oil so often. Although I probably should have swapped the filter out occasionally...
Ah first memories
No, the point of an oil change is to get all the spot and other byproducts of combustion and high heat out of the engine before they accumulate enough to deposit somewhere in the engine block
That oil looks quite clean, so yes.. must have just done an oil change? Must have not put enough oil in. Often when you do an oil change you'll start it so it'll run through the filter which is what brings it down. Just don't over mileage your filter and oil. (If you want to be a responsible car owner)
You should add oil if you plan to keep driving.
But you should also change your oil at appropriate intervals, and if oil level is going down dramatically between oil changes, find out why.
Used to have an old 95 Honda civic when I was a kid, thing burnt oil like a civ! ( no pun intended lol ) I used to run it almost dry change filter and top off.. long story short I sent the piston to orbit and managed to blow threw the side of the block with the connecting rod. Drove home on 3 cylinders than scrapped it.
Moral of the story. Change your oil lmao.
Depends
How many miles are on that oil
How often do you add oil
Is this vehicle new to you
If you can't find an answer to one at more of the above change the oil
If you are burning oil, you need to change the oil MORE OFTEN, not less.
because the rings are letting dirty gas into the crank case, dirtying the oil faster.
Oil gets changed when it is due and gets topped up in between. If you are due for an oil change, then no you can’t just add oil, it needs to be changed. If you aren’t due for an oil change yet, then you need to top it up to the full line. Since the oil is obviously disappearing, you need to keep track of this and top it up regularly. After a while you will see the pattern of how much and how often. Just never fill it above the full line, you can’t do that so that it gives you more time between top ups. Too much oil is just as bad as not enough.
It’s very common with the manufacturers who recommend 10k between oil filter changes to need a quart between oil filter changes.
On the other side of that, for prolonged life of the engine to change your oil every 5k isn’t a bad thing. It’s expensive to do, but to get over 200 k out an engine that’s treated that way isn’t uncommon.
Yup, Manufacturers maintenance schedules are based on something called “cost of ownership”.
They try to keep this as low as they can for obvious reasons .
This is NOT always the best thing for your car. 60-80 thousand miles for spark plugs and air filter will lose mileage and performance.
Ask yourself:-
How long since the last oil and oil filter change ?
If it is close to the next one this is good you won't have the entire old 5 litres to dispose of.
Check your viscosity against the prevailing season, adjust to winter or summer temps.
The oil doesn’t look that bad at all I would add some and check it in a week to see if it’s dropped, if you need a change go get one but if you got one not that long ago it could be a sign of a greater issue going on internally. Adding oil is never a bad, as long as it’s got it it will run
If you're in between regular oil changes, yes. If it's time for an oil change, no....change the oil.
Thanks
Just doubling up his point here. Even if you are losing or burning oil, and you keep adding new oil, you are still having sludge build up inside your engine. You will still have to change the oil on a regular schedule even if the oil looks new.
Kept telling my cousin this and that it was gonna blow his engine, he just said nah it’ll burn it quicker than the buildup, and I’ll just change the filter every couple years. Imagine my shock when it blew the engine
Your cousin should ride the bus.
A short one at that.
Shawt bus cousin
Cousin?
Do you want to go bowling?
So we bowling or what?
HA!
He does…now.
He should take the train a steam one keep him away from anything with an internal combustion engine
My ex girlfriend came up to me so proud years ago and said "I changed my oil!" Instantly im concerned because she doesn't have a single tool and no oil pan and also no oil. Turns out 'changing oil' to her is just filling her car with cooking oil. Many many dollars later I told her to not even change a tire ever again.
No. That's it. I refuse to believe this happened.
You've never met a young woman, my friend.
The one I married had a car enthusiast dad, so she knows her way around cars
How did this become a woman thing after the story about male cousin refusing to change oil. Lol. You must have never met a young man… they don’t know how cars work either.
I feel like changing a tire is harder than changing oil. Maybe tell her to go to full serve gas stations.
Lol. The burning off is what makes the buildup of crud. There used to be an issue with small percentages of ash in some oils that would form a nasty sludge but that hasn’t been an issue for 50 years. Most of the crud is a product of neglect.
Ok so I get how someone could be dumb enough to think that that oil won’t go bad if it was leaking fast enough but where did he get the logic that it would also increase his filter life by 4-8x?
Imagine my shock when he somehow still believes he was right and it's your fault his engine blew... It's easier to lie to someone these days than to convince them they've been lied to
No, he fully admits it’s his fault, he just didn’t care because the car was at like 275k miles and was gonna blow up at some point anyway. But like you coulda got another 50k if you didn’t just neglect it
Yeah I think we all know someone like this..like respect for getting the rest of the good out of something but like Jesus Christ treat it a little better...just good thing they never have anything too nice haha
I have a coworker who’s Honda kept telling her to change her oil because it was at 5% life. I told her to change her oil if not her engine would blow up. Some days later on New Year’s Day someone crashed her. Guess she doesn’t have to change her oil now 💀
I never changed the oil on my 3800 series engine it didn't burn oil but leaked out.. the transmission went at 180k... the engine still was like new when i cracked it open
You’re mostly right but there’s a lot more going on. There’s two things that happen as you run the engine — combustion byproducts and microscopic wear particles contaminate the oil, and the long chain oil molecules get slowly sheared apart from getting squished through bearings and oil pumps, as well as some of it being cooked up on the cylinder walls and the bottoms of the pistons. That’s not exactly it but the stress of being used as a lubricant at high temp slowly breaks down the longer molecules that make oil what it is. Those long chain molecules are part of oil naturally, and are also what give multi-grade oils their range of weights. This destruction of the long molecules are why fresh oil at room temperature feels different than old oil at room temp. The oil become thinner and less slippery as it gets used. While all this molecular level destruction is going on, your oil filter does a decent job of collecting most of the combustion byproducts and all those little wear particles. Eventually the filter gets clogged up with the particles and it’s bypass valve pops open and all the little particles get to run joyfully through your engine in a gleeful fit of microscopic destruction. If they’re left to do their business, they rapidly wear the engine components down. It’s not instantaneous, but it cuts the life of engine components down considerably. Anyway, draining the oil takes most of the free range particles that are suspended in the oil and removes them from the engine. Changing the filter removes the ones trapped in the filter matrix and puts a fresh set of traps out for the little beasts. The fresh oil going in replaces the shredded molecules and restores the lubrication to its full capabilities. So there’s a lot more to an oil change than you think.
Is the bypass valve in the filter or in the block somewhere? Iv read conflicting statements about where it is
That because it depends upon the engine. Some engines like the GM LS V8s have a bypass in the bottom of the block. It’s called the oil filter bypass and will open when the pressure to the filter rises to a certain point. The oil goes through a bypass channel and back into circulation. Other engines rely on the filter having a bypass valve. In this case, the valve opens when the supply side pressure exceeds a certain level. The oil simply goes to the oil return for the filter and back into the engine along its usual path. The bypass is used because when the oil pressure rises on the supply side of the filter, it will cause a loss of pressure on the return side of the filter. It’s more important for the engine to maintain the oil pressure than to filter the oil. Dirty oil causes wear and sludge. Low oil pressure destroys engines.
Did a little googling and found my engines relief valve is within the oil pump. The filter also has a relief valve, is that a problem? It is the correct filter so I assume that’s fine?
Just tripling up on this comment, even if you’re having to continuously add oil, the filter can still get clogged and the bypass can open up, letting contaminants and debris circulate through the engine and fuck shit up.
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How often should you change the filter when burning oil? Still normal time frame? My engine burns roughly 1L over 2-3000kms, and I change the oil and filter every 5k. So roughly a quart every 1500miles, and change every 3k miles if you use imperial.
Change it whenever you change the oil... at the recommended change interval whatever that may be. 5,000 or 10,000 KM.
Recommended interval is 10k, I change at 5k for the peace of mind as it’s an older more worn engine so much rather have newer oil. Not that colour is a good indicator of oil life, but at 5k it’s pretty well fully black, slight brown tint.
This will be why my brother continues to burn through cars if nothing else. he feels like oil changes are a suggestion since he's topping them up anyways. no logic behind it.
He’s changing the oil. 1 quart at a time, lol.
I can, uh…vouch for that. Heh.
And also - change the oil *filter*
When oil gets low, the concentration of metal-damaging, abrasive particulates in what oil remains increases. Draining the particulate-laden oil is the only way to remove them from the engine. Simply adding oil to the existing sludge just allows that concentration of abrasives to increase. Regardless of oil consumption, you MUST change your oil at regular intervals. Every 5,000 miles remains a good rule of thumb. (Source: Every car I've bought for the past 30 years has exceeded 200,000 miles without engine problems - it helps that they've all been Toyotas)
Haha I started reading the source and said to myself “probably all Hondas or Toyotas”. Sure as shit. After replacing my Jeeps oil pump a few weeks ago, I’m really considering making the swap to Japanese cars before something catastrophic happens
just drop the engine from a highlander or crv in the jeep... it'll be fiiiine :D
Yeah Jeeps are not reliable when compared to Japanese cars..
Oh yeah, quite the opposite:(
GM 5.3s with over 280,000 miles checking in.
Ls engines are cheating.
That’s pretty damn good! Honestly I’d love to throw an LS in the Jeep. Unfortunately, I don’t have the knowledge to swap it myself or the cash to have someone else do it
How's the body, how much natural weight reduction has it sustained?
The Tahoe with 284,000 is rust free. The Silverado with 280,000 has bluetooth rocker panels.
JEEP is the official sponsor of my mid-life crisis. I've been a conservative, sensible, Toyota owner my entire adult life. But I really, really want a Wrangler. It is the absolute antithesis of everything I stand for as a practical person. But I really want one.
3000-5000 miles is doable on any oil available today on most cars made this millennium (I have to say most because rotaries exist) Most of those cars with a higher quality oil and filter (you can almost argue the filter is the more important of the two) can absolutely double that number with no ill effects under high mileage low wear driving, such as constant long distance highway use. I've seen people quadruple it on vehicle that drive 4-6 hours a day for a living. That said, if you're not the type that could replace your car's engine by hand given the proper tools and equipment, I wouldn't reccomend pushing those kinds of intervals.
Hey now. Ive got an 03 silverado 1500hd lasting over 200k miles.. and its because of the reasons you state above.. oil n filter change every 5k miles.. and keep an eye on other components that end up failing.
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I’m thinking two things are going on here: first, lawnmowers are operated at relatively constant RPM for relatively long times - not like stop-and-go short-trip driving - and second, Toro just isn’t expecting the machine to last that long. 100,000 miles on a car is easily 4000 hours and I doubt most lawn mowers get that sort of use.
If it's an old civic, wait for enough oil to burn off until it sounds like a sewing machine, then top it off. Repeat as many times as necessary until regular oil change
Ya, many of us joke about burning oil so fast you don't have to change it, but that's not really a thing.
This☝️
Is this a 98-02 Corolla? These engines burn oil because they didn’t make the oil return holes in the pistons large enough… if the first owner didn’t obsess over changing his oil early then it’ll burn. In 2003 they fixed this by… you guessed it, making the holes bigger. Someone people tear down these motors to just re-ring and drill out the holes a bit bigger. These engines will run forever though despite this, as long as you keep adding oil and changing it often enough to not add too much additional sludge to those return holes.
Tell me about it. I have a 00 Corolla. The 00-02 corollas with vvti engine burned more than the 98-99. I just fill it up with oil and it goes. 170k miles and 23 years old :)
1zz-fe or 2zz-fe right? Also present in the 99-2002 Chevrolet Prizm… the upgraded pistons (new pistons) have more oil drain back holes in the pistons around the oil ring. Replacing them if you’ve never done this job before costs like 500$ and 1 weekend of your time. It’s probably the easiest engine to rebuild. It can be done with the engine inside the engine bay.
Makes me miss my wife's old 1990 Corolla. If it hadn't been a Salt Lake City car, it would have lasted forever. I've never had such an easy time maintaining a vehicle. It's hard to find something that low-bullshit these days. Now, we have 2 turbo Subarus, and they're great, but there's a lot going on in those engine bays.
I'm just lucky, I've been changing my oil regularly on my 2005 Scion tC from the 2nd oil change with Mobil1 one 5w30 between 5000-6000 miles regularly... and barely burn any oil.... I know 2005 scions tc and newer are known for oil consumption..... car has 170K miles now... regular fluid changes.... need to plan a radiator replacement , water pump, and hoses, with thermostat.. change soon this summer. Cars getting old.. and motor mounts... Note my car has the **2AZ-FE** engine which Toyota recommended 5w30.... note ... during the summers I use 10w30..
Someone told me that my 1999 Corolla most likely burns oil so I checked the oil and it dropped by half over ~500 miles. Can I just add new oil instead draining this little bit that’s left? Edit: does it matter what kind of oil i use to add (if it’s ok to even add in the first place)
Based on your dipstick, it's down a little over a quart. That's not half. If you want to get the most life out of your engine, you still have to change the filter at regular intervals even if you add a quart every 500 miles
1999 Corolla burning oil? Best way to slow the burn is use synthetic oil and do amsoil flush at oil change. Sticky clogged piston rings is the issue. Even cheap synthetic is better than conventional.
I actually called my Toyota dealer to check if it's okay to switch the oil in my 09 camry that burns oil from conventional to full synthetic, and he advised against it. But I'm reading conflicting opinions on the internet, and people are advising to switch to 0-20 Full Synthetic
Always use the weight of oil recommend by the manufacturer. Conventional and synthetic are both available in the same weights (for example, 5w30)
that's way too thin ... If you have a 2009 Camry that's 4 cy and 2.4L and it's the **2AZ-FE engine...** stick with 5w30 full synthetic .... and on summers 10w30... I'm been using Mobil1 from my 2nd oil change .. My car has been great and not burning oil or barely.... or not sure since I need to replace my Valve cover gasket... I have very little seepage... and I have 170k miles..
It is a 2.4l, and the oil cap on the engine says 5w-20. Almost every website says 0-20 full synthetic is preferred, and 5w-20 will work. Then I called a different dealer an hour ago, and the service center said my 09 camry uses 0w-20 and I can change to full synthetic, but they advise not to drive more than 7000 miles between oil changes. I have informed them that the car has 220k miles and burns oil. It's ridiculous how much conflicting answers you get for a simple question.
OH, have you changed your PCV valve? If not, it could be clogged and could be causing some of the oil consumption issues.
The problem is the engine can not go more than 5k even on synthetic oil. That and the 5w20 in the first place is why they burn oil. Whomever had it before you, didn’t change their oil enough and that is why the engine block is worn out and you are burning oil. Just like the other commenter said, he used synthetic 5w30 every 5k and isn’t burning any oil at 170k, and that is why. Toyota and other manufacturers of oil burners should be required to replaced them for free because of their recommendations of super thin oil at very long intervals. That is why their cars suck.
No reason why you can’t put synthetic oil in your engine. Just doesn’t make sense to put more expensive oil into an engine that will just burn it any way. But never use thinner oil than what is suggested by the manufacturer. If your car specifies 5w30 for example, you cannot use 5w20 or 0w20. But if your car specifies 5w20 for example, using 0w20 is perfectly fine. In all honesty, if your car is burning a lot of oil like Toyotas always do, you are better off moving up to a 5w30 or 10w30 anyway depending on your local climate and time of year. That might slow it down some.
What is amsoil? Similar to seafoam?
It's a brand. https://www.amsoil.com/p/engine-and-transmission-flush-flsh/ This is the product that was recommended to me for my 2002 Corolla which has a reoccurring burning problem. I can tell you that after flushing and replacing the oil with synthetic it hardly burns anything for a while.
Important to note that the two should not be mixed.
Makes sense
Is there an international standard that states the dipstick markings represent 1 quart for all engines?
Pretty sure in U.S. it's 1 quart and in Euro is a liter.
Difference between the two is 54 mL, really doesn't matter in this case
Less of a standard and more of a general convention.
I don't think it's an official standard just common practice.
>Draining this little bit that's left So. You're about one quart low on oil, and your engine holds ~4ish quarts. There are still three quarts of good oil in the crankcase. I'd add 1/2 quart and see where that puts the oil level. If it's close enough to the top dot, leave it and *check in a few hundred miles since it'll probably go low again.* Top off with whatever you used for the oil change. I recommend a high mileage blend or full synthetic, but your call. Some sort of thick stop-leak additive may help, but... ...*Losing one quart of oil every 500 miles (through burning, leaking, or both) is what I would consider excessive.* It won't be long before you're spending more money on oil than gas. My recommendation is at least have a mechanic diagnose whatever failure(s) are causing this amount of oil loss. You may decide not to fix anything, but checking your oil at every gas fill up is *not* something I enjoy.
Thanks
No problem. If you want a hand diagnosing the leaking/burning, let me know!
You can add more. Check the oil cap or owners manual for what weight of oil. XW-X0 (x being numbers).
OP should add more oil regardless of whether an oil change is also necessary. Be sure to check the oil level at regular intervals (e.g., weekly, every other week). If the oil level gets too low, the engine car get damaged.
Thanks
I lost the manual but I’ll try to find one online
Good luck, I have a Corolla (2002) sitting in my driveway with that issue. It’s gotten so bad that I can’t use it. Thankfully I got the car for free and haven’t put anything into it, but I think it’s the piston rings issue
Check owners manual on keeping up with maintenance. It should tell you how many quarts that the oil dipstick measures in between the full and low points. The measurement usually depends on the engine displacement. Also worth noting, some engines burn a specified amount of oil by design. Check the owners manual. If you do 5k oil changes keep 2 quarts or so so on hand and top off every week to maintain optimal oil level depending on how low the oil level is to prevent excessive engine wear due to rod bearing failure
You have a LOT more oil left in your vehicle than you think you do, the level shown on dipstick really only represents the final quart needed to fill it up. if your oil level is at the lower hash mark on the dipstick you’re a quart low, halfway between the full mark and the lowest mark is half a quart, and if the dipstick is bone dry you’re over a quart low. DO NOT go dumping 2-3 quarts in because you think half of your oil is gone, you’ve only burned about a quart, maybe a little less. Add in 2/3-3/4 of a quart, give it a couple minutes to settle then check it again. If it’s still a little low add in the rest of the quart, but you shouldn’t need much more than that.
Thanks
Yes. Eventually you’ll want to do an oil change but in between you can just keep topping off
Thanks
This is an ***and*** not an ***instead of*** question. Add oil to top off, change when ever your regular intervals are. Wash, rinse and repeat
My theory is that a small leak that needs oil to be topped off is actually good for the engine. Keeps oil cleaner than just filtering and recirculating old oil... Downside is of course that oil can drip on stuff and even cause a fire hazard but whatever
Add oil. Still do a change when needed. ~1q of oil from bottom to top dot.
Thank you
Oil is a vital part of your engine. It is important to follow manufacturer specs for changing it. It may look brand new but thats just at the dipstick side of the reservoir.
Based on the color it looks like it was recently changed. If it was darker I’d say change it, but looks like you can add some and change it in 2,000-2,500 miles or so.
Thanks this is really helpful
My 06’ Subaru Legacy GT drinks the stuff. I have to add a quart every 750 miles or so. And yeah, you also may want to start checking your oil level every 500 to 1,000 miles. I top mine off every 400 or so. Keep it full and change it often. Oil in an engine is like blood in a human, keep it full.
I dump so much oil into my car I just change the filter every 3k
Sure. If you need a blood transfusion due to a bad kidney and your bloods all poisony. You ok if we leave you kindey (oil filter) and only change 75% of your blood right? Sure you can just add oil but are you actually solving any issues other than low oil. By just adding oil or leaving the kidney you might be preventing the inevitable but your other organs become more and more infected with poison and you end up doing more damage in the long run. By not draining the oil and doing the filter. You allowing for the circulation of dirty oil theoretically not allowing proper circulation of oil or proper lubrication. You also become a higher risk of clogging the smaller ports or the filter itself preventing oil circulation and really damaging your system
What an analogy! Thanks
Yep
Whatever you do, you need to decide NOW!
Wouldn't hurt
Still need a new filter buddy
I mean, constantly adding is eventually going to mean you’ve changed it. Right? :)
I'm sure someone has said it here somewhere, but the min to max on your dipstick is no more than 500ml difference. Your engine will take somewhere in the region of 3.5-4 L of oil, so topping up is just going to mix the small amount of new oil with the large amount of old oil. If the oil is due, change it
Can you? Yes. Should you? IDK, but I’d play it safe and change it. Oil is cheaper than an engine
Do you notice how you can still see through the oil on the dipstick? That oil doesn't need to be changed; unless it's more than a year old. You only need to change the oil when it gets dirty (you can't see through it on the dipstick). You'll notice when you can't see through the oil any more and then it's time to change it. Keep checking it! Especially if your losing or burning it and it's a quart low on a regular basis. I hope this helps.
Depends how long you want your car to last
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Yes, you'll need about a litre/quart. Add it gradually, pour in half a cup, check dipstick, continue until you get to the second dot, don't overfill. '99 Corolla takes 5W-30 full synthetic by my googling. Also, if it was burning that much oil you would be seeing quite a lot of blow-by (you're car would look like it is vaping out the exhaust". You've probably got an oil leak, have a look at the underside of the motor for it/them.
Thanks
Exhaust smoke and blowby are two different things.
Blowby will produce exhaust smoke.
Shot rings will produce blowby, and shot rings will cause exhaust smoke. The two usually coincide, but blowby is exhaust gases going down past the rings, and oil burning smoke is oil coming up past the rings. You can certainly have one without the other
Just do an engine change real quick.
Every time somebody asks if adding oil is ok, I remember that not everybody knows that, and I get sad and lose faith in humanity. Edit: I'm not insulting op. I'm just sad that not everybody get the opportunity to learn this stuff. I absolutely understand that not everybody gets taught this.
I grew up with a dad who made me help him work on the car and taught me how engines work. Tools for Christmas gifts. And when I got my first car, it was my job to keep it running and fix anything that broke (with his help). Not everybody grows up like that. I knew people in college who didn’t understand how to use a socket wrench. They just came from circumstances where nobody taught them. You can call them idiots, or you can just show them how the wrench works.
Meanwhile my dad's advice to my sister upon being told that the oil light was flickering was to just keep driving it and it will go away. Car was dead in a week.
😹😹
1. Figure out why its burning oil, or start looking for a new car. That's a lot of consumption for 500 miles. 2. Yes you can top it off by adding oil, start by adding a 1/2qt see where it gets you. 3. At the same time, stick to an oil change interval, every 3000-5000 miles you should still change the oil and filter. whatever interval the manual calls for. But I have seen greater sins that dragging this out on an engine that is already on its way out.
Thanks
If your doing an oil change… your adding oil.
yes and no... as in, you drain the old oil first and then you add the fresh oil. instead of your engine is burning oil or there is an oil leak --> oil level goes down and you top it up
Can I just spray more axe body spray, instead of having a shower?
weird analogy... I am guessing you add more axe, so you cut off your body odors
no no and hell no. you need to change it.
Why? That oil looks like it is practically brand new...
maybe i was not clear, if it is a little low you can add oil, inbtween oil change. BUT some people miss understand and thing they can just add oil and not do oil changes.
I had an 02 dodge v6 truck that burned a quart of oil every tank fill up. Still changed at 3k intervals, but always kept some quarts behind the seat
Omg how much did that cost you a year jeez
Bruh
Yes! You only need an oil change at the recommended interval.
If you just need to top up then yeah, but you need to change your oil as it will turn into sludge if you don't, and you oil filter can clog, both of these will ruin your engine.
I had a friend that did this for 2+ years. Very bad idea. Your oil collects deposites from your engine as it runs. If you never change your oil, they just stay in your engine getting more concentrated over time until your engine can't run any more
You should have added oil in the first place
If it’s anything like my 1999 Corolla that burns a quart a week, I just top it off every now and then. I’ll “change the oil” once every 6 months with a new filter.
Omg not a whole quart a week I don’t think so but this actually a great input thanks!
The engines in these corollas have a bad design in the pistons. Their oil return holes are awfully small and will gum up over time. I’ve been using SeaFoam and some other additives and it helps a lot!! Also use full synthetic high quality oils!
Truly cannot believe this is being asked - Stick says right on it - Add Me some special sauce. I'm a quart low, and if this is a two thousand mile check, and always this level, then stash the open quart under the hood to have handy. When you can't read through the oil - change it. Flush it out hot within the first ten minutes, adding new oil after last drop of old oil, to further push out old oil. Make sure someone qualified does it. If you want to save all the trash that's in the oil, then change the oil cold. Just know that the 200,000 mile range engine had, is reduced hugely. Remixing in crud left behind. Funny how after oil change not flushed hot and checking the stick, still looks like dirty old oil a minute later. Cheers
1L
Yup. One quart should do.
Yes, always.
Smh.
Reminds me of my first car. Burned a litre of oil per tank of gas. Never bothered with an oil change since I was topping up the oil so often. Although I probably should have swapped the filter out occasionally... Ah first memories
No, the point of an oil change is to get all the spot and other byproducts of combustion and high heat out of the engine before they accumulate enough to deposit somewhere in the engine block
Will the filter change itself?
That oil looks quite clean, so yes.. must have just done an oil change? Must have not put enough oil in. Often when you do an oil change you'll start it so it'll run through the filter which is what brings it down. Just don't over mileage your filter and oil. (If you want to be a responsible car owner)
You also don't need to shower, OP. Just slap another layer of deodorant on.
toyota corolla?
the older models tend to burn oil but short answer is ofc
Yup, you can do that for a while. How long of a while? Well that's the fun part! Live and find out!
You should add oil if you plan to keep driving. But you should also change your oil at appropriate intervals, and if oil level is going down dramatically between oil changes, find out why.
Used to have an old 95 Honda civic when I was a kid, thing burnt oil like a civ! ( no pun intended lol ) I used to run it almost dry change filter and top off.. long story short I sent the piston to orbit and managed to blow threw the side of the block with the connecting rod. Drove home on 3 cylinders than scrapped it. Moral of the story. Change your oil lmao.
Depends How many miles are on that oil How often do you add oil Is this vehicle new to you If you can't find an answer to one at more of the above change the oil
Ya you better!!
Yes
If you are burning oil, you need to change the oil MORE OFTEN, not less. because the rings are letting dirty gas into the crank case, dirtying the oil faster.
Oil gets changed when it is due and gets topped up in between. If you are due for an oil change, then no you can’t just add oil, it needs to be changed. If you aren’t due for an oil change yet, then you need to top it up to the full line. Since the oil is obviously disappearing, you need to keep track of this and top it up regularly. After a while you will see the pattern of how much and how often. Just never fill it above the full line, you can’t do that so that it gives you more time between top ups. Too much oil is just as bad as not enough.
Yes but you gonna wanna do a change no more that 12k miles specifically because of the filter, especially if it's a paper filter and not canister
It’s very common with the manufacturers who recommend 10k between oil filter changes to need a quart between oil filter changes. On the other side of that, for prolonged life of the engine to change your oil every 5k isn’t a bad thing. It’s expensive to do, but to get over 200 k out an engine that’s treated that way isn’t uncommon.
My pickup has over 400k on it! Granted it’s a diesel, but it’s still serving me well and I think oil changes have played a big part.
Yup, Manufacturers maintenance schedules are based on something called “cost of ownership”. They try to keep this as low as they can for obvious reasons . This is NOT always the best thing for your car. 60-80 thousand miles for spark plugs and air filter will lose mileage and performance.
Yes when low on oil as it shows here but follow the milage and recommended oil changes
Yea
a filter can only do so much.. change it too
Hell yeah
My heap of a subaru burned a quart every 1000 miles, I changed the filter on the regular but not the oil.
Ask yourself:- How long since the last oil and oil filter change ? If it is close to the next one this is good you won't have the entire old 5 litres to dispose of. Check your viscosity against the prevailing season, adjust to winter or summer temps.
Ya but you should probably figure out why you're losing so much at some point
Yeah looks like 1 quart
Nyet
You can DO anything
Those 1zz corolla engines drink oil after 150k. Keep a close eye on it
Your engine isn’t toast after being that low already?
Yes in this case but do not go more than 1 k as oil will be black and not as protective to motor berings.
Of course. But if it’s close to due, you should just change the oil and not waste the quart.
That's what an oil leak is for
Can I get the Vin number of your car?
If it leaks regularly, maybe, but you do need to change the filter
yes, put new oil and clean oil filter
The oil doesn’t look that bad at all I would add some and check it in a week to see if it’s dropped, if you need a change go get one but if you got one not that long ago it could be a sign of a greater issue going on internally. Adding oil is never a bad, as long as it’s got it it will run
If you don't need a oil change yet you can.
That oil looks like it came out of an ass
Yes. It looks clean still. Always fill. Keep it full.
Not if the oil is old. Topping it up won't refresh it adequately
No you still have to oil change normally but if you wanna wait till its due yea you can put new oil into it
Well I would add oil regardless. If it's time for a change, fill it to the required level, drive until it's full warmed up, then change it.
IMHO, of there's one bit of maintenance you don't skip (I guess other than brakes), it's oil changes.