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    A Recommended Practice for the Purchase of Lubricants

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    There were three interpretations that might be placed on the phrase “purchase specifications,” as applied to lubricating oils. Such specifications might: 1. Prescribe the methods of refining and manufacture, the components and additives employed, and even state the source of the crude oil—in other words, composition specifications. 2. State the physical and chemical properties capable of being measured in any laboratory by standard methods of test on small current samples representing conditions at the date of test—what we might call physical specifications. 3. Require a statement or guarantee of future performance in service or in “life tests” under actual or similar conditions—that is, performance specifications.

    Author Information:

    Voshell, B. C.
    Manager, Socony-Vacuum Oil Co., Inc., New York, N. Y.

    Committee/Subcommittee: D02.12

    DOI: 10.1520/STP47304S