FUEL ECONOMY LUBRICATIONS IN HEAVY DUTY ROAD SERVICE

Newly formulated lubricants for high-speed diesels in vehicular service improved the fuel economy of a truck fleet using fuel efficient oils in controlled operations by 3 to 3.7% (confidence interval = + or - 1%), relative to three conventional commercial heavy duty oils. The evaluation of fuel economy differences for crankcase oils in uncontrolled diesel truck fleets is often futile. The randomness of the operation produces imprecise results that prevent drawing conclusions with confidence. Controlled operation, with statistical adjustment of the data, is required for meaningful results. Care must also be taken to ensure consistency of engine conditions.

• Supplemental Notes:
  • Conference on Multigrade Oils for Diesel Engines, held in Baltimore, Maryland, October 20-23, 1980.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Younghouse, E C
  • Waddey, W E
  • Schmidt, R P
• Publication Date: 0

Media Info

• Features: References;
• Pagination: p. 41-52
• Serial:
  • SAE Special Publications
  • Issue Number: 0
  • Publisher: Society of Automotive Engineers (SAE)

Subject/Index Terms

• TRT Terms: Crankcases; Diesel engines; Fleet management; Fuel conservation; Fuel consumption; Heavy vehicles; Lubricants; Lubricating oils; Measurement; Trucks
• Uncontrolled Terms: Fleets
• Subject Areas: Energy; Highways; Motor Carriers; Vehicles and Equipment; I96: Vehicle Operating Costs;

Filing Info

• Accession Number: 00361725
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: SP-472
• Files: TRIS
• Created Date: Jul 30 1982 12:00AM