Originally Posted by cambit
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.
100 won't benefit your car at all, neither will "95". It doesn't have the compression/timing to utilize the extra octane.