GM Original Equipment™ Engine Coolant & Antifreeze (10-101) by ACDelco®. Dex-Cool Extended Life Engine Coolant - 1 gal. ACDelco Dex-Cool Extended Life Engine Coolant is a silicate, borate, nitrite, and phosphate free, premium-grade coolant designed to help prevent your engine from overheating during use by absorbing and dispersing the heat of combustion while also protecting against rust and corrosion. Based on carboxylate technology, ACDelco Dex-Cool Extended Life Engine Coolant is engineered to meet the demands of today's modern engines, including those with hybrid propulsion systems.
