Description Durex Heavy Duty SCA Precharged Antifreeze / Coolant Full Strength is a premium quality, virgin ethylene glycol-based coolant precharged with Supplemental Coolant Additives (SCAs). This product is designed for use in heavy duty cooling systems applications and will provide protection against freezing, boil-over, cavitation erosion, corrosion, scale and foaming without SCAs at the initial fill. Provide up to 6,000 hours or 300,000 miles of protection.PRODUCT DETAIL:Recommended for use in all heavy duty diesel engines requiring SCAs Meets ASTM D3306 and D6210 performance requirements Phosphate free, low silicate formulation No initial SCA precharge required High quality defoamer system, non-harmful to hoses, plastic or gaskets Protects from -34 F to 265 F