I know, depends how you drive, warm up, change the oil etc. but still,.. is there some kind of accepted ball park figure? Mine is a 1988 325, 2.7L Auto mostly driven short distances. It just turned 145k and there is a noticeable knock at cold start idle which goes away after the temp comes up to normal. The car has reasonable power, doesn't use excessive oil, runs smoothly and doesn't leave any smoke behind. Should I resist the urge to add Marvel Mystery Oil?
- posted
16 years ago