Quantity of (5) Bottles: Howes Lubricator HL103060 1/2 Gallon, Diesel Treat Diesel Fuel Conditioner and Anti-Gel, Reduces the cold filter connection point of your base fuel an average of 20 degrees, Provides superior weather protection cold and is safe and effective on all blends from diesel and biodiesel to B-20, prevents fuel from gelling, increases power and fuel economy,