Quattro 50% Anti-Freeze and Summer Coolant is a 47.5% mono ethylene glycol based antifreeze for protection against freezing in winter and boiling in summer. Quattro 50% Anti-Freeze & Summer Coolant prevents corrosion in the cooling systems of trucks, automobiles and mechanical equipment. The product offers adequate protection, at the minimum dilution, against corrosion on ferrous metals, copper, brass, and aluminium. Quattro 50% Anti-Freeze & Summer Coolant contains scale inhibitors to prevent the formation of scale deposits in the cooling system. If another make of antifreeze has previously been used, drain and flush the cooling system with clean water. Fill up with the recommended concentration using Quattro 50% Anti-Freeze & Summer Coolant. Never top up with another make of antifreeze (especially phosphate and nitrate type antifreezes). As good practise drain and replace once a year unless otherwise stated by the engine manufacturer. Quattro 50% Anti-Freeze & Summer Coolant is a highly concentrated product, which could damage paintwork. Harmful if swallowed. In case of ingestion seek immediate medical attention. Avoid contact with skin. Keep out of reach of children. Dilution: The minimum dilution by volume for the product is 50%, or 1 part Quattro 50% Anti-Freeze & Summer Coolant to 1 part water. The following table summarises the protection at certain dilutions: using neat protects between -37 to +124C and diluting 1:1 protects between -12 and +104C