One 16 oz. bottle will do 55 gallons of alcohol fuel, Works by reducing friction and providing better protection from corrosion associated with the use of methanol fuel, Product is specifically formulated for methanol, but can be used for gasoline and ethanol fuels as well, Engineered to be safe for fuel injectors, carburetors, O2 sensors, and catalytic converters, Provides a nice, but not overpowering cherry scent.