Corrosion Inhibitor may be used in protecting cooling systems in all types of machinery and vehicles. Provides excellent corrosion prevention for diesel and petrol engines with aluminium heads or blocks. premium export product, not previously available in Australia. The primary reason for the addition of radiator protection chemicals is to reduce corrosion in the cooling system. Cyndan Corrosion Inhibitor contains a small amount of coolant, however, the greatest results are achieved because of its double strength which provides excellent protection and superior economy. Corrosion Inhibitor may be used in protecting cooling systems in all types of machinery and vehicles