I keep reading on here about people using premium gas and racing gas. I would like to say this to them. Octane in the fuel slows the burn rate of the gas witch reduces the power it creates. The reason race cars use 100+ octane fuel is because it reduces engine knocking and premature burning of the fuel. When you use it in a low compression engine it will reduce the power it creates because it will not burn as fast. So please remember just because its race fuel or premium it will not make u go faster. The only reason to use any higher then 87 is if your engine knocks.