Valvoline's Zerex G 48 antifreeze coolant meets ASTM specification D3306 for automobiles and light trucks and ASTM D4985 for heavy duty trucks
Contains less than 250 parts per million of silicon as required by the heavy duty trucking industry.
Its low silicate, low pH, phosphate free European technology protects all cooling system metals, including aluminum, from corrosion.
Country of Origin: United States