ExxonMobil announced an addition to its Mobil® Delvac® family of premium lubricants and greases -- Mobil Delvac Extended Life Coolant/Antifreeze. The new product is designed to provide exceptional corrosion protection for all cooling system metals, including aluminum, brass, cast iron, steel, solder and copper, and helps extend coolant drain intervals for any diesel-, gasoline- or natural gas-powered engine.