The corrosion inhibitors of engine coolant has the functions of corrosion and rust prevention,and it is the most important functional additive in engine coolant.Corrosion inhibitor has a certain selectivity in the effect of protecting metals.A corrosion inhibitor has a good protective effect on certain metals but possibly accelerates corrosion in other metals.There-fore,multiple corrosion inhibitors are generally applied in a compound manner to protect engine coolants in multiple metals in the cooling system.
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