The world's number 1 fuel additive for gasoline and diesel engines. Great tuning in a bottle handles gasoline, diesel and increases MPG. Cleans and lubricates the fuel system, including fuel injectors, carburetor and combustion chamber. Improves fuel economy by burning excess exhaust emissions.Increases power and acceleration by improving fuel flow and reducing deposit buildup. Neutralizes sulfur and other harmful contaminants present in the fuel system. Increases the life of pumps and injectors.