• Zerex-HD-extended-life-NF-coolant-concentrate-20L

Incorporates Organic Acid Technology (OAT) to protect diesel engines from liner pitting and hard water scale deposits. Registered to Cummins CES-14603 and conforming to ASTM D6210, ZEREX™ Nitrite Free Coolant is suitable for common heavy duty diesel engine requirements. The silicate and nitrite free extended life chemistry protects all cooling system metals, including aluminium, from corrosion. It can also be used in gasoline engines, stationary power, marine, natural gas and light duty applications.