A five-vehicle, 64 000-km test with 7.45 litre V-8 engines was conducted to determine if synthetic engine oils provided performance sufficiently superior to that of conventional engine oils to permit longer oil change intervals. The results show better performance in two areas of deposit control; inferior performance with respect to wear protection; and essentially equivalent performance in the areas of fuel and oil economies. Based on these data, it was concluded that synthetic engine oils do not provide the necessary performance required to safely recommend their use for extended oil change intervals. In addition, a cost analysis shows that the use of synthetic engine oils, even at a change interval of 32 000 km, will essentially double the customers' cost compared with conventional engine oils at GM's current 12 000-km change interval.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Vehicle Evaluation of Synthetic and Conventional Engine Oils


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1975 SAE International Off-Highway and Powerplant Congress and Exposition ; 1975



    Publication date :

    1975-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Synthetic engine oils - a new concept

    Miller, B. / Rogers, T. / Smith, D. | Tema Archive | 1974


    Synthetic Engine Oils - A New Concept

    Miller, B. J. / Smith, D. B. / Rogers, T. W. et al. | SAE Technical Papers | 1974


    Advanced Synthetic Passenger Vehicle Engine Oils for Extended Oil Drain Performance

    Bergstra, R. J. / Givens, W. A. / Richman, W. H. et al. | SAE Technical Papers | 1998


    PERFORMANCE OF TURBO ENGINE SYNTHETIC OILS

    CRAMPTON, A. B. / PENNEKAMP, E. F. H. / LIFSON, W. E. et al. | SAE Technical Papers | 1952


    Advanced synthetic passenger vehicle engine oils for extended oil drain performance

    Bergstra,R.J. / Givens,W.A. / Maxwell,W.L. et al. | Automotive engineering | 1998