Oxidation Testing of Gas Turbine Oils 680320

The newly developed Coordinating Research Council oxidation test technique for aircraft gas turbine engine lubricants has been evaluated by a “round-robin” test program. With few exceptions, the participants rated the test oils in the same order by each of the stability criteria. Reproducibilities of the test criteria (percent viscosity increases, neutralization number increases and corrosivities to metals) are considered satisfactory. Information based on test and statistical data suggested revisions in the test procedure that would reduce test variables and further improve reproducibilities.


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