Quote:
Originally Posted by JimD
I do not have repair experience on a bimmer yet, fortunately, but on the other cars I have owned, oil burning occurs mainly because of valve stem seals. With a boosted motor, you have more pressure in the intake which may mean more pressure in the engine pushing oil harder at the seals.
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I've got the problem at the other end - 1l per 600km (about 1qt/750). I suspect valve seal hardening due to
mild driving.
I'd heard rumour that a problem with the crank case ventilator can make this worse but have not been able to confirm or deny