GMW17918

Description / Abstract: Material Description.

This standard details the materials and performance requirements of a glycerin based Organic Acid Technology (OAT) extended life engine coolant with a minimum recommended service interval of five (5) years or 150 000 miles when used at recommended concentrations.

Symbols. Not applicable.

Applicability.

The extended life engine coolant is used to protect automotive engine cooling systems from corrosion, freezing and boiling. The extended life coolant concentrate is intended to be mixed with clean, potable water per the recommended limits specified in ASTM D3306. The extended life coolant Glycerin Base was first approved for the GMSA region using minimum 35 volume percent concentration. The concentrations to be used are specified in the Global Engine Coolant Mixture Best Practice Heating Ventilation and Air Conditioning Powertrain Cooling (HVACPTC-229) unless deviation has been granted by the Global Subsystem Leadership Team (GSSLT).