Durex's 50/50 Pre-mix Extended Life is a blend of high quality ethylene glycol-based antifreeze and purified, deionized water. Used right out of the bottle, it provides performance and protection from -34 to 265 degrees for all makes and models, gas and diesel engines alike. | Durex 50/50 Pre-Mix Extended Life Anitfreeze and Coolant | Size 1 gal