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  1. 8

    Cooling system rust... Evapo Rust safe?

    Cooling system flushes are usually acid based. Phosphoric, sulfamic, and citric are most common and in order of descending strength. Acid based flushes will not work if the system is oily. Remove oil using a non-foaming detergent before flushing. Cascade dishwasher detergent is popular for...
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