Ready-to-use 50/50 prediluted formula Maximizes cooling system performance with superior protection against cavitation corrosion/erosion. Improves heat transfer, reducing operating temperatures by up to 20°F FOR ALL BRANDS/ALL MODELS/ANY COOLANT COLOR: Cars, SUVs and minivans; Trucks: Light and Medium Duty 5 year/150,000 mile protection Compatible with gasoline and diesel engines. Safe for cast iron, aluminum and brass systems.