EFFECTS OF ENGINE OIL ADDITIVES ON VEHICLE FUEL ECONOMY, EMISSIONS, EMISSION CONTROL COMPONENTS AND ENGINE WEAR

Engine oils containing either colloidal or soluble friction modification systems may provide a measurable and appreciable fuel economy improvement to the motoring public. However, the friction modification improvements seen during EPA testing do not appear to reach full potential at the critical 6,437 km. test point, but require considerably more kilometer accumulation for maximum fuel economy benefits. Friction modified oils exhibit a greater fuel economy benefit during cold and transient engine conditions due to decreased friction at the piston ring/cylinder wall during periods of high cylinder gas pressures. The friction modified, fuel efficient oils tested did not appear to contribute to abnormal engine wear, emission component deterioration or catalyst poisoning.

  • Supplemental Notes:
    • From the 13-16 Novemeber 1978 Meeting.
  • Corporate Authors:

    Society of Automotive Engineers

    400 Commonwealth Drive
    Warrendale, PA  USA  15096
  • Authors:
    • McDonnell, T F
    • Tempe, S A
  • Publication Date: 1978-11

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00195284
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: SAE 780962
  • Files: TRIS
  • Created Date: Aug 15 1979 12:00AM