Protective additive for closed cooling circuits; new generation, all-season, contains no nitrites or amines. KAPPA is an anti-freeze, coolant, anti-scale and anti-rust agent. The special stabilising inhibitors prevent corrosion of aluminium and alloys, enhancing the heat exchange within the cooling circuits, even with hard water. The product does nor evaporate and does not create foam. It ensures correct cooling down to, and raises the boiling point, without damaging radiator hoses or other rubber parts. It can be used to top up the radiator, in conjunction with existing liquids.