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      11-06-2012, 12:00 AM   #96
Private First Class

Drives: 2013 BMW M3 COUPE
Join Date: Jul 2012
Location: San Francisco, CA

Posts: 150
iTrader: (0)

i probably wasted my money, but during the 1200 mile break-in period I filled up with Sunoco GT 100 octane gas from my local 76 station (woodside, redwood city).

Occasionally I go back to mix 100/91 to get ~95 octane, but mostly just fill up at the whatever gas station is near, Shell, Chevron, 76, and Costco gas.