Torco F500010TE Unleaded Fuel Accelerator A blend of components which transforms the make up of premium pump gas to closely resemble race fuel Significantly raises the octane of premium fuel (91 octane): 32 oz To 10 gals = 102 octane, 32 oz to 5 gals of fuel = 105 octane! Will not harm sensitive O2 sensors or catalytic converters