4 quarts in 3,000 is 1 quart every 750. Breaks down to about an ounce every 30 minutes at 50 miles per hour. Closer to 40 minutes per ounce at 40 mph. May not be enough to notice the part that is burning. Someone else mentioned in another thread today that there will be some consumption in every engine because of the lubing of rings. i think that if i were to put oil in a baggie, it would be a mighty small hole that leaks an ounce every 30 minutes or 40 minutes, so you aren't looking for a huge leak.

That being said, i was using (burning, visible smoke on take-off) a quart every 200 miles. The oil cap seal helped a little, but valve guide seals really did the trick. 1100 miles since last oil change, not a noticable change in the level yet. Not a bad DIY job if you have access to the proper valve spring compressor. Wish i had done it much sooner. (it is a bad, bad job if it is done in conjuction with broken chain rails, bent exhaust valves, timing cover off, etc. Especially for a novice. Don't ask)

I do have 2 or 3 oil cap seals in the garage for a 560, but i bet it fis most of the MB's made from 81 to 91. Think they could mail for 37 cents. Need one?

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Earl McLain
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)