Do it Best Gallon Concentrate -62 F to 274 F Conventional Automotive Antifreeze

Designed to protect gasoline and diesel engine cooling system metals from corrosion, scale, and sludge. Maximum freeze-up/boil-over protection: -62 deg. F. to 274 deg. F. Low silicate formulation. Not for use in engines requiring extended life antifreeze. 1 gallon concentrate.