Test methods to evaluate the effect of engine oil formulations on fuel economy were investigated using various experimental and commercial oils. A series of laboratory tests, including a motor-driven engine, a single-cylinder engine generator, and several automotive engines on dynamometer stands, was employed to evaluate 11 oils. Oils tested in the motor-driven engine showed reduced power requirements for low viscosity oils at low temperatures and for friction-reducing additives at high temperatures. The single-cylinder engine generator exhibited a trend toward improved fuel economy with friction-reducing additive. Automotive engine dynamometer tests, run at several operating conditions, demonstrated fuel economy improvements for low viscosity oils and for oils containing friction-reducing additives. Data from vehicles tested on an all-weather chassis dynamometer provided an excellent simulation of field service. Laboratory test procedures correlated well with results obtained in the chassis dynamometer. Supporting test data are provided in appendices.

  • Availability:
  • Supplemental Notes:
    • Presented at SAE Passenger Car Meeting, Troy, Michigan, 5-9 June 1978.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Passut, C A
    • Kollman, R E
  • Publication Date: 1978

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00396322
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: SAE 780601, HS-025 519U
  • Files: HSL, USDOT
  • Created Date: Aug 31 1985 12:00AM