Our DFL formula contains powerful detergents that clean injectors and remove deposits. DFL conditioner protects against corrosion and deposits while providing a protective layer against the buildup of gum, varnish, and other deposits in the fuel system. Adding DFL will keep the fuel system clean and results in a more complete burn. Our DFL conditioner increases power, adds better fuel economy, and reduces emissions. Adding DFL enhances fuel stability: For fuel that is stored for long periods, DFL can improve its thermal and storage stability, preventing it from deteriorating and forming sludge.