ETG13-Coolant-Additive is a radiator corrosion inhibitor and anti-freeze agent based on ethylene glycol. It is free of any potentially hazardous substances such as nitrites, amines and phosphates. It is especially recommended for high-tech engines which require special high temperature aluminium protection. A concentration of 50% by volume is recommended throughout the year. It is miscible with most refrigerants based on ethylene glycol. Other additives prevent deposits and foaming of the coolant. ETG13-Coolant-Additive offers year-round protection against frost and corrosion during the entire service life of an engine.