Pyroil™ Fuel Dryer & Antifreeze prevents frozen gas lines, assures quicker starts and inhibits rust by removing water from the fuel system. Since rust, unlike ice, can occur at any time of the year, Pyroil Fuel Dryer & Antifreeze is ideal for year-round protection for gasoline and diesel fuel engines in automobiles, trucks, tractors, motorcycles, boats, snowmobiles, construction equipment and more.