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Old 09-29-2010, 02:38 PM
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Location: NC
Join Date: Feb 2009
Posts: 766
Mein Auto: 97 740iL
My only advise is to use heavier oil next time and see if it helps this issue. I'm on a laptop and my speakers aren't any good, but if the valve covers were not sealed, I'd imagine that the car would be sputtering and probably throw a code. Is the engine running rough? Synthetic oil flows very easily and 5w-30 is some pretty thin oil. I run the factory 15w-40 in mine and the motor doesn't seem to have any trouble with it.
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