... antifreeze coolant meets ASTM specification. D3306 for automobiles and light trucks and ASTM D4985 for heavy duty truck It contains less than ... 2502. Recommended for water-cooled engine cooling system. 3. It is applied to ... -engine cooling system. 4. It has different freezing points:-25°c,-30°c,-35°c,-40°c,-45°c. coolant for different vehicles