Volume 4, Issue 8 (September 2007)

    Validation of Oxidative Stability of Factory Fill and Alternative Engine Oils Using the Iron Catalyzed Oxidation Test

    (Received 4 December 2006; accepted 18 June 2007)

    Published Online: 2007

    CODEN: JAIOAD

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    Abstract

    Oxidation resistance is one of the limiting factors for long drains, bionotox, LowSAP or NoSAP engine oils. The French iron catalyzed oxidation test (ICOT) uses 60 ppm iron acetylacetonate as diluted catalyst under an aeration of 10 L∕h at 170°C. The ICOT ranks the oxidation stability of oils according to three properties: a. the viscosity increase (e.g., max. Δη40°C<100 % or Δη100°C<100 %), b. the increase to an individual TAN (e.g., max. 7.5 mgKOH∕g) and c. the oxidative evaporation losses of max. 10 % at Δη=100 % due to oxidation. This paper describes the ICOT method standardized as GFC Lu 36T 03 and the obtainable accuracy. Also, results are compiled achieved with this test for factory fill engine oils as well as alternative prototype engine oils based on esters, blends of esters with hydrocarbons, and polyglycols.


    Author Information:

    Fitamen, Eric
    RENAULT SAS, Guyancourt

    Tiquet, Laurent
    RENAULT SAS, Guyancourt

    Woydt, Mathias
    Federal Institute for Materials Research and Testing (BAM), Berlin


    Stock #: JAI100938

    ISSN: 1546-962X

    DOI: 10.1520/JAI100938

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    Author
    Title Validation of Oxidative Stability of Factory Fill and Alternative Engine Oils Using the Iron Catalyzed Oxidation Test
    Symposium Automotive Lubricant Testing and Additive Development, 2006-12-05
    Committee D02