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. Additionally 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 be used in vehicles that require leaded fuel because it replaces the benefits of lead in gasoline without causing harmful emissions. Use it to pass smog tests. Lastly it neutralizes the harmful effects of low sulfur diesel fuel.