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    Corrosion and Testing of Engine Coolants

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    Corrosion protection is essential to any engine coolant. The wide range of metals and materials utilized in automobile engine cooling systems requires a complex of additives for corrosion resistance. A basic understanding of corrosion mechanisms and influences of individual metals is fundamental to successful formulation. Several types of corrosion can occur and these are addressed by different ASTM engine coolant testing methods. The desire for longer-life coolants emphasizes the need for newer testing methods to successfully simulate engine coolant requirements. Extension of current methods and new approaches to providing protection is discussed.


    engine coolant, corrosion, pitting, galvanic, corrosion-fatigue, accelerated testing, long-life coolant, recycled coolant

    Author Information:

    Beal, RE
    Amalgamated Technologies, Inc., Scottsdale, AZ

    Committee/Subcommittee: D15.21

    DOI: 10.1520/STP38241S