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    Test Methods for the Development of Supplemental Additives for Heavy-Duty Diesel Engine Coolants

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    This paper deals with the use of supplemental coolant additives (SCAs) for the protection of heavy-duty diesel cooling systems. The unique needs of heavy-duty diesel are discussed as well as the special demands made upon the coolant by heavy-duty service. Developmental considerations for heavy-duty SCAs are given and new and modified test methods are proposed for their evaluation.


    heavy-duty diesel, supplemental coolant additive (SCA), antifreeze coolant, additive depletion, coolant contamination, coolant degradation, foaming, corrosion, erosion corrosion, cavitation corrosion, heat transfer surface scaling and fouling, elastomer, compatibility

    Author Information:

    Hudgens, RD
    Senior chemist, Fleetguard Inc., Cookeville, TN

    Hercamp, RD
    Technical advisor, Cummins Engine Co., Technical Center, Columbus, IN

    Committee/Subcommittee: D15.11

    DOI: 10.1520/STP32982S