TOTAL COOLELF SI-OAT is a "very-long-life" coolant made of monoethylene glycol.cavitation, corrosion and overheatingTOTAL COOLELF SI-OAT has fast, effective protective properties. It provides a high level of protection against damage caused by freezing,TOTAL COOLELF SI-OAT coolant is especially recommended for certain ICEs  both for light vehicles (MB and VW group Euro 6 engines), heavy vehicles (MB, MAN, Scania and Cummins Euro 6 engines), public works machinery (Liebherr Euro 6 engines) and agricultural tractors (MTU Claas engines).