Don't waste your money. Are you trying to turn regular into premium or add octane to premium? Either way the stuff doesn't work, the directions for my supercharger specifically said not to use octane boosters. There is no benefit to burning higher octane gas than your car requires. It is like that Z-max junk that Shelby endorses, waste of money. I just looked at the bottle in the picture, why would you want nitro methane in your gas?