EVALUATION OF STATISTICAL PROCEDURES FOR GRADING FUEL EFFICIENT ENGINE OILS

In March 1980 the EPA distributed for industry comment a draft "EPA Recommended Practice for Evaluating, Grading, and Labeling the Fuel Efficiency of Motor Vehicle Engine Oils." EPA requested Falcon Research and Development Co. to "Analyze comments received...with regard to the recommended statistical procedure." As a follow-up effort, Falcon was requested to provide an independent assessment of certain aspects of the proposed statistical procedure. Particular areas identified for consideration were: (1) comparative accuracy of carryover and non-carryover effect procedures, (2) means for encouraging (rewarding) accurate testing, (3) dealing with outliers in fuel economy test data and (4) the impact of variability in oil effects across car models on the meaningful grading of oils. An investigation of these areas, and cursory examination of some additional topics form the subject of this report.

• Corporate Authors:

  Falcon Research and Development

  1 American Drive
  Buffalo, NY  United States  14225

  Environmental Protection Agency

  2565 Plymouth Road
  Ann Arbor, MI  United States  48105
• Authors:
  • Kaufman, S
  • McAdams, H T
  • Morse, N
• Publication Date: 1980-11

Media Info

• Pagination: 78 p.

Subject/Index Terms

• TRT Terms: Accuracy; Engine oils; Evaluation; Fuel consumption; Grading (Earthwork); Lubricating oils; Performance tests; Statistical analysis; Vehicle power plants
• Uncontrolled Terms: Grading
• Old TRIS Terms: Automobile engines; Statistical tests
• Subject Areas: Data and Information Technology; Energy; Highways; Vehicles and Equipment; I96: Vehicle Operating Costs;

Filing Info

• Accession Number: 00338055
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: 3520-2/BUF-40 Final Rpt., EPA-460/3-81-012
• Contract Numbers: EPA-68-03-2835
• Files: TRIS
• Created Date: Sep 16 1981 12:00AM