1.   ZK brand antifreeze coolant is a long life , the ethylene glycol (POLYESTER GRADE)based formula suitable for passenger cars, light trucks and heavy duty vehicles. The formula is designed for both gasoline and diesel engines and has a service life of up to three years or 60,000 miles. It protects all engine cooling system metals from corrosion including aluminum.

2.   ZK antifreeze coolant protects modern engine components from winter freezing and summer boil over.

3.   ZK antifreeze coolant contains a high quality defoamer and will not harm gaskets, hoses, plastics or original vehicle finishes.

4.   ZK antifreeze coolant meets ASTM specification

        D3306 for automobiles and light trucks and ASTM

        D4985 for heavy duty trucks.

   It contains less than 250 parts per million of silicon as required by the heavy duty

trucking industry.

5.   ZK antifreeze coolant is formulated to meet or exceed the following antifreeze specifications and/or recommended practices:

        ASTM D3306 SAE J814c

        ASTM D4985 SAE J1941

radiator antifreeze