Hot Shot’s Secret genuine Diesel Winter Anti-Gel Diesel Fuel Additive in a 16oz. bottle. Diesel Winter Anti-Gel is a fuel additive that lowers the pour point of diesel and biodiesel to keep your fuel liquid and unfrozen during the cold winter months. One 16oz bottle will treat 200 gallons of diesel fuel or 100 gallons of biodiesel. Benefits: Lowers Pour Point to -65F (-54C) in Diesel Fuel Prevents Gelling and Icing Improves Cold Starts Disperses Moisture Adds Lubricity Boost Power Improves Fuel Economy Works in Biodiesel!