A series of bench engine tests and field trials have been carried out using Japanese domestic engines and vehicles. Various motor oil viscosity grades were evaluated in order to select the best for fuel savings. A laboratory evaluation to assess friction behavior and antiwear properties was used to select suitable friction modifiers for formulating fuel saving motor oils. In general, higher oil consumption was obtained with lower viscosity oils. In some cases piston and bearing seizure occurred under severe operating conditions. Valve train wear performance of the lubricant appeared to depend mainly on the additive type used.From these experimental studies, it was determined that a viscosity grade of “7.5W-30” was best for fuel efficiency, engine performance and durability in current Japanese vehicles.Fuel efficiency was further improved by incorporating an organic Molybdenum compound as a friction modifier in the formulation.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Fuel Efficient Motor Oil for Japanese Passenger Cars


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE International Congress and Exposition ; 1981



    Publication date :

    1981-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Fuel Efficient Motor Oil for Japanese Passenger Cars

    Hamaguchi,H. / Maeda,Y. / Maeda,T. et al. | Automotive engineering | 1981


    Noise inside passenger motor cars

    Bobbert, G. | Engineering Index Backfile | 1959


    Fuel efficiency of passenger cars

    Internationale Energieagentur | TIBKAT | 1991


    Fuel efficiency of passenger cars

    Internationale Energieagentur | SLUB | 1991


    Evaluation of MTBE Gasoline by Japanese Passenger Cars

    Date, Kazuto / Miyawaks, Shintaro / Maeda, Tsutomu et al. | SAE Technical Papers | 1980