No measurable consumption on the dipstick, no leaks or drips, no blue smoke under any circumstances.
Valve guides and rings need oil but use can be almost eliminated to all intents and purposes with correct design and material choice.
Look at low tension rings as an example of incorrect design and/or material.
Who has a car that does not use oil?
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OVERKILL
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Using Mobil 1 AFE products, both the '06 Charger and '02 Expedition show no reduction in the level on the dipstick. OCI's are approximately 12,000Km (7,500 miles).
The SRT is still breaking in, but I have had to top up the PU SRT 0w-40 between changes.
Originally Posted By: 55Test
My 2000 Corolla's 1zzfe with 445000 kms doesn't seem to be using any oil. Judging by what I've read of other people's experience with their own 1zzfe's that seem to use a lot of oil, mine seems unusual. Is it one of those cases where it's a problem if it's not using oil I wonder?
Originally Posted By: supton
Originally Posted By: 55Test
My 2000 Corolla's 1zzfe with 445000 kms doesn't seem to be using any oil. Judging by what I've read of other people's experience with their own 1zzfe's that seem to use a lot of oil, mine seems unusual. Is it one of those cases where it's a problem if it's not using oil I wonder?
My or use to own 67Beetle. Some of you remember air-cooled engines, not popular anymore, but my old Beetle never used a drop till about the 90k mile mark, but it was run hard, wish I had it back,,,wow,,,only 1900 bucks taxes and financing,,,ok, I'm old now...I used straight 30 Havoline in Florida then, but in Tennessee I used 10w30 or 40, cant remember anymore...
4WD
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Don't you miss adjusting the valves ?
Nick1994
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Originally Posted By: 4WD
Don't you miss adjusting the valves ?
The Focus does not use any if using a 30 grade. It will consume a quart on 20 grade within 5K miles.
The Ram does not use any within its OCI of 8-10K miles.
Originally Posted By: fdcg27
All engines must consume some oil by design.
Some oil must make it all the way to the top ring just to lubricate and seal it against the bore and some oil must get all the way down the valve guides for the same reason.
People who claim that their engines don't use a drop are kidding themselves.
In my book, as long as the oil level stays within the range between full and add on the dipstick for whatever OCI I've decided upon, then that would qualify as nil consumption.
Oil consumption is one of those dirty little secrets of car ownership that too many people want to pretend they don't have with their cars. Consumption is also typically low enough that owners can ignore it between trips to the quicky lube, which is what 99% of owners do since they regard their cars as no more than useful appliances.
If you have to add oil, no big thing. Just check it and add as needed.
For the record, most of the cars we've had over the past thirty years or so needed no adds between drains.
My old jalopies (with the exception of a high mileage chevy 350 block in a 71 malibu) all used prodigious amounts of oil.
None of my vehicles purchased new since the mid 1990's have used any noticeable amount of oil
Nothing in my sig uses oil. Even the Mustang with 5W-20 hasn't used any in the 4K miles I have owned it. My Harley doesn't use any either, which is kind of a surprise for an air-cooled engine. The wife's Equinox uses about 1/2 quart every 3,500 mile oil change, though. I change the iol in it more often due to direct injection and people seem to be having timing chain and cylinder issues if these are run doing extended drains. It is the 2.4 four cylinder engine.
4WD
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None in my signature- but only 2 north of 75k ...
Neither my 06 Toyota Sienna with the 3.3 V6 (84K miles) or my 99 Subaru Outback (128K miles) with the 2.5 quad cam motor use oil between changes. My 2010 Impala (107K miles) with the 3.5 V6 uses about a quart between changes going by the OLM, it always has.
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We are about 50/50 in our house.
My 2003 Protege5 will use a couple of quarts in a 5k OCI. Probably leaks most of it. (211K miles)
Our 1999 Mercury Grand Marquis will use a quart in a 5k OCI. (84K miles)
The 2010 Altima doesn't use more than a 1/2 quart in a 6K OCI (150K miles)
The 2003 Corolla doesn't appear to use (155K miles)
and we'll see how the new 2017 RAV4 gets on.
It depends on how "using oil" is defined. Does it mean the oil must stay completely at the full level during an OCI or does it mean that a slight drop on the dipstick level is not "using oil"? On my sig line, the Ridgeline oil level remains at the full mark during a typical 5000 mile OCI. The Corolla's level will drop about 1/3 of a quart or so during a 5000 mile OCI, and our Odyssey also drops about 1/3 to 1/2 a quart during 5000 miles. The Saturn, on the other hand and true to its reputation, will use about 1 quart of oil every 1500 miles or so. In my mind, according to a loose defintion of "using, or burning, oil", none of my vehicles use oil except for the Saturn.
Originally Posted By: artificialist
Originally Posted By: supton
Originally Posted By: 55Test
My 2000 Corolla's 1zzfe with 445000 kms doesn't seem to be using any oil. Judging by what I've read of other people's experience with their own 1zzfe's that seem to use a lot of oil, mine seems unusual. Is it one of those cases where it's a problem if it's not using oil I wonder?
Currently three vehicles that don't use oil.
My Jeep only leaks a bit of oil but doesn't burn any. My buddy's 2000 Cherokee 4.0 that I posted under valvecover pics of a while back uses no oil between changes, ever. It doesn't leak either since I replaced the oil pan gasket and oil filter adapter o-ring when he first bought it. The jeep has 180k hard miles on it. He tends to abuse vehicles. 
My mom's 2011 Fit has close to 70k on it and doesn't burn a drop of oil. I always use 0w20 in it.
Dad's 2013 Grand Cherokee with the 5.7 and 90k miles burns a slight bit of oil, but only when towing heavy loads. If he hasn't towed anything in awhile the oil level stays the same. Might have to do with running the spec'd 5w20?
My mom's 2011 Fit has close to 70k on it and doesn't burn a drop of oil. I always use 0w20 in it.
Dad's 2013 Grand Cherokee with the 5.7 and 90k miles burns a slight bit of oil, but only when towing heavy loads. If he hasn't towed anything in awhile the oil level stays the same. Might have to do with running the spec'd 5w20?
For twelve years I have never had the 1MZ_FE V6 in my 04 Camry use any oil(Mobil I 0W-20/0W-30).
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