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Old 01-17-2013, 02:19 AM   #214
TerraPhantm
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Join Date: Feb 2008
Location: Mountain Top
Posts: 5,996
My Ride: 2005 M3 Coupe
Quote:
Originally Posted by jdstrickland View Post

The answer is, use the gas specified by the sticker on the gas cap, or fuel filler door. The caveat is, a lesser grade is fine, the car will adjust the engine timing as needed to support what you put in. There is no point in using a higher grade, the car will not run better with better gas, but it will tune itself to the lesser gas if you put it in.
Making more power and getting better mileage doesn't qualify as "running better"?
Quote:
Originally Posted by MercForHire View Post
323 runs happily on 87
330 needs 91
It can be argued that the 323 needs it more than the 330. The 323 runs higher compression (10.5:1 vs 10.2:1 for the 330)

Last edited by TerraPhantm; 01-17-2013 at 02:26 AM.
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