Quote:
Originally Posted by ezaircon4jc
Be careful when increasing viscosity. The VANOS requires a certain oil pressure range to work properly. Personally, I wouldn't go higher than what's in the manual.
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Good point, but as long as the oil is LL-01FE, it is approved by BMW. 5W-40 LL-01 is on the list for the N63, although a dealer will only do what came from the factory.
IDK, the way I look at it, how good for the engine can the 0W-30 be if it is so thin it burns off? I am not an oil expert though. I change mine every 5k anyway.