Adds corrosion resistance to modern “orange” OAT coolants and traditional "green" anti-freeze, Better “Wetting” than Traditional Coolant Additives, Improves Engine Cooling by Improving Surface Wetting & Lower Surface Tension, Stops the Adverse Effect of Hard Water Better than the Leading Brand of Coolant Additives, Protects Against Rust & Corrosion Inside the Radiator, Water Pump & Cylinder Heads.