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Re: That's a normal, low consumption rate (archive)

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Posted by Jack on September 25, 1999 at 08:09:00:

In Reply to: That's a normal, low consumption rate posted by DG2 on September 23, 1999 at 20:34:43:

Should be okay.

My 328i has about 29,000 miles on it now and it has been about 12,000 miles since the last oil change, it still reads full. I havne't noticed any oil consumption between changes at all (maybe a little, but nothing noticible).

My father's new cadillac concours eats about 1qt every 2000 miles, dealer says it's okay.

Most new cars, dealers will say 1qt every 1000 mile is okay.

I wouldn't worry too much if it's only 1 qt every 5k.

just top it off every now and then.


: I'll put it this way. If an typical new car owner complains to the dealer that his engine is consuming one quart per thousand miles (not 5,000 plus like yours), it is considered normal and they won't do anything about it. I assume BMW's response would be about the same. A quart per 5000 miles is perfectly acceptable and in no way indicates a problem. A normal engine WILL use some oil. Oil lubricates the cylinder walls and some of this burns off in combustion. Also there are small amounts of leakage in the valve guides and past the piston rings. Something like a quart in 100 miles is about the level where you see lots of oil smoke from the exhaust (all the time), by the way.

: If an engine truly consumes ZERO oil, it has a problem and won't have a long life. It would mean the cylinder walls aren't being properly lubricated. Lots of people claim their engine doesn't consume oil, but it does (or better). It might just be at a very low rate (almost undetectbable between oil changes).

: Do your engine a favor and check the level more often than 5000 miles. With our extended oil change intervals, most or all of us will need to add oil between changes.

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