Genuine Motorcraft Ford Anti-rust Anit-frezee coolant is a new generation ethylene glycerol-based premium engine coolant, offering excellent corrosion protection and formulated specially for all Ford engine- cooling system and meets all Ford warranty requirements. It also helps prevent freeze ups to 37' c and boil-overs.For Vehicles filled with Motorcraft Ford at the plant, it is highly recommend that Motorcraft Ford coolant be used for maintenance.