A powerful blend of oils and additives that contain no SOLVENTS. Designed to increase power and fuel mileage and also lower exhaust emissions through a more complete combustion. Lucas Fuel Treatment is formulated for both gasoline and diesel engines carbureted or fuel injected. It gives your fuel system what it really needs - a blend of super slick oils and additives with a high detergent action that allows the engine to operate at maximum efficiency. Also it cleans and lubricates the carburetor and injectors and causes the fuel to burn more thoroughly for increased power and less fuel consumption. Lucas Fuel Treatment should definitely be used in vehicles that require leaded fuel because it actually replaces the benefits of lead in gasoline without causing harmful emissions. Use it to pass smog tests. Finally it totally neutralizes the harmful effects of low sulfur diesel fuel. Lucas Fuel Treatment complies with the federal low sulfur content requirements for use in diesel motor vehicles and non-road locomotive and marine diesel equipment engines. The recommended dosage is 2-3 ounces of Fuel Treatment for every 10 gallons of gasoline or diesel fuel. Pour Lucas Fuel Treatment directly into fuel tank. Exceeding the recommended dosage is not harmful to your vehicle. 5.25oz Bottle - One bottle treats up to 25 gallons of fuel. 1 Quart/32oz Bottle - One bottle treats up to 100 gallons of fuel. 1 Gallon/128oz Bottle - One bottle treats up to 400 gallons of fuel.