Keep metals protected against corrosion with concentrated antifreeze coolant from Zerex. This antifreeze coolant has a freezing point of -34 degrees and boiling point of 275 degrees. The specific gravity is 1.110 and the pH is 11. This 55 gal. yellow antifreeze coolant meets standards: ASTM. Its applications include: Low-silicate, low-pH, phosphate-free formula is designed to minimize inhibitor depletion and protect all cooling system metals, including aluminum, against rust and corrosion in gasoline- and diesel-fueled cars, light trucks, and heavy-duty vehicles. Meets European standards; approved by Daimler Chrysler for worldwide applications. HOAT formula. Light duty 150,000 mi./5 yr.; Heavy duty 300,000 mi./3 yr. For use with passenger cars and light trucks.