Coolelf Plus Evo -37°C is a "very-long-life" next generation premium engine antifreeze based on monoethylene glycol and containing cutting-edge silicate inhibitor technology with phosphate supported by a robust organic backbone (OAT - Organic Additive Technology).Coolelf Plus Evo -37°C is a versatile and multifunctional coolant designed to cope with the most extreme engine conditions for Internal Combustion Engines and Battery Electric Vehicles by providing hard water and oxidation stability.Coolelf Plus Evo -37°C is free from nitrites, borates, amines and 2-ethylhexanoic acid (2-EHA).Coolelf Plus Evo -37°C ensures year-round frost and corrosion protection.The coolant can be used in a wide range of drivetrains. It is especially designed for use in modern Internal Combustion Engines (ICE), Hybrids and indirect cooling systems of Battery Electric Vehicles (BEV).Coolelf Plus Evo -37°C coolant is ready for use, as a mix with demineralised water.Coolelf Plus Evo -37°C can be used for cooling systems made of iron, steel, aluminium as well as copper alloy. It is compatible with rubbers and engineering (thermo)plastics.Recommended coolant change interval*: • 500 000 km/4 years when used in trucks • 250 000 km/5 years when used in cars.*It is recommended to refer to the vehicle’s maintenance manual.Coolelf Plus Evo -37°C is compatible with most other coolants based on ethylene glycol such as (former) Si-OAT coolant generations. Exclusive use of product is however recommended for optimum performance.Organic technology ensures a long-term action to offer maximum protection against any type of corrosion, erosion and cavitation, even at high temperatures.• Thermal oxidative stability • Controlled Atmosphere Brazing (CAB) flux compatibility • State-of-the-art silicate stabilisation • Outstanding aluminium passivation • Excellent hard water stabilityPrevents the formation of gels or deposits in the cooling system.Replaces/compatible with former Si-OAT and hybrid Si-OAT generation coolants.Carefully selected additives to reduce environmental impact.