Quote Originally Posted by Bill George View Post
Of course higher octane gives you more power in the engines designed to use it, otherwise there would not be different grades of gas.
Sorry, but the higher octane simply burns slower to help control pre-ignition. It, in itself, doesn't provide any more "power". But yes, a high compression engine that is designed to have a lot of power can only do what it does when the higher octane fuel is used so that the gas doesn't "explode" too early in the piston cycle for each cylinder. How things get said matter because there truly are a LOT of people that think buying "premium" high octane fuel is going to make their VW Beetle perform like a Lambo. Really. They do.