ASTM WK37908

    Revision of D7097 - 09 Standard Test Method for Determination of Moderately High Temperature Piston Deposits by Thermo-Oxidation Engine Oil Simulation Test-TEOST MHT

    (What is a Work Item?)

    Active Standard: D7097 - 09

    Developed by Subcommittee: D02.09.0G | Committee D02 | Contact Staff Manager


    1. Rationale

    The present version of the originally proposed technique does not incorporate a completely sealed passage for the test oil from the Lower End Cap of the Depositor Assembly to the gear pump. As a consequence there are occasional very high deposits that occur that cannot be duplicated. Moreover, there is an opportunity to improve precision by returning to complete sealing.


    deposits; engine oil; oxidation; thermal decomposition; thermal oxidation; Engine (lubricating) oils; Piston deposits; TEOST (thermo-oxidation engine oil simulation test); Thermal decomposition; Thermal oxidation;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Theodore Selby

    Draft Under Development