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      11-03-2012, 08:29 PM   #35
TheDeliverator
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2013 BMW M3  [0.00]
Quote:
Originally Posted by MStar View Post
I wouldnt use the 85..this engine is high compression and calls for at least 91. I suspect if you use lower octane the car will retard timing..but I would be worried about knocking
Mstar is right on the money here.

Quote:
Originally Posted by PhillyNate View Post
I just switched from Citgo to BP. The car seems to like it a little better.
Probably a bunch of lies, but the paperwork I received said that BMW recommends BP.