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					Originally Posted by Slate 01  So for an idiot like me, am I good with the 0/40W Mobil 1 Porsche spec'd earl? | 
	
 
Depends upon what you want.  We do not use any 0W-40 M1, and have not for many years now.  The are much better oils available now that offer far superior engine protction.  We also do not use any 0W-anything oils due to low film strength issues inherent to zero weight oils, regardless of the manufacturer, and stopped using Mobil 1 products completely not long after Exxon acquired them and started reformulating the line.