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The Performance of Fuel-Saving Engine Oils
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Abstract
The fuel-saving capabilities of various experimental and commercial passenger car engine oils have been demonstrated in extensive studies. Lower viscosity oils and those containing friction-reducing additives have shown measurable fuel economy benefits in a wide range of laboratory and vehicle tests. Several test techniques are described for screening fuel-saving engine oils and components. Closely controlled chassis rolls and over-the-road vehicle tests are utilized to demonstrate the actual lubricant-related fuel economy benefits.
Within the range of variables included in this study, reducing engine oil viscosity is the most effective way to improve fuel economy. Fuel savings realized from friction-reducing additives are relatively modest and many of the more effective materials are shown to have poor performance in standard sequence tests, particularly regarding engine wear. The most appropriate fuel-saving engine oil should combine the benefits of low viscosity along with the use of a carefully selected and thoroughly tested friction-reducing additive.
We strongly support industry efforts to standardize a test procedure for identifying fuel-saving engine oils. Based upon these studies and other investigations, the most suitable method for such a procedure are the EPA FTP and HWFET cycles.
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Authors
Citation
Lohuis, J., Murphy, J., and Rogers, T., "The Performance of Fuel-Saving Engine Oils," SAE Technical Paper 800436, 1980, https://doi.org/10.4271/800436.Also In
References
- Goldmann, C. E. “A Synthesized Engine Oil Providing Fuel Economy Benefits”, SAE Paper # 760854 presented at the SAE Off-Highway Vehicle Meeting, Milwaukee, September, 1976.
- Krulish, J. A. C. Lowther H. V. and Miller B. J. “An Update on Synthesized Engine Oil Technology” SAE Paper #770634 presented at SAE Fuels and Lubricants Meeting, Tulsa, June, 1977.
- Haviland M. L. and Rodgers, J. “Automatic Transmission Fluids as Related to Transmissions Operation” Lubrication Engineering, March, 1961.
- Douaud A. and Eyzat, P. “DIGITAP - An On-Line Acquistion and Processing System for Instantaneous Engine Data Applications” SAE Paper #770218 presented at the SAE International Automotive Engineering Congress and Exposition, Detroit, March, 1977.
- Broman, V. E. DeJovine, J. DeVries D. L. and Keller, G. H. “Testing of Friction Modified Crankcase Oils for Improved Fuel Economy” SAE Paper #780597 presented at SAE Passenger Car Meeting, Troy, June, 1978.
- Ghirla R. J. and Smith, R.K. “Automotive Engine Friction and Fuel Efficiency-Viscous versus Non-Viscous Effects” SAE Paper #780984 presented at SAE International Fuels and Lubricants Meeting, Toronto, November, 1978.
- Passut C. A. and Kollman, R. E. “Laboratory Techniques for Evaluation of Engine Oil Effects on Fuel Economy”, SAE Paper #780601 presented at SAE Passenger Car Meeting, Troy, MI, June, 1978.
- McDonnell T. F. and Tempe, S. A. “The Effects of Engine Oil Additives on Vehicle Fuel Economy, Emissions, Emission Control Components and Engine Wear” SAE Paper #780962 presented at SAE International Fuels and Lubricants Meeting, Toronto, November, 1978.
- Riester J. E. and Chamberlin, W. B. “A Track Test Comparison of Fuel-Economy Engine Oils” SAE Paper #790213 presented at SAE Congress and Exposition, Detroit, February, 1979.
- Hart W. and Klaus, E. E. “Laboratory Testing of Fuel Efficient Oils” SAE Paper #790731 presented at Passenger Car Meeting, Dearborn, June, 1979.
- Retzloff, J. B. Davis, B. T. Gluckstein M. E. and Petras, J. M. “Fuel Economy Benefits from Modified Crackcase Lubricants” Lubrication Engineering, October 1979, pp 568–576.
- Lonstrup, T. F. Bachman H. E. and Smith, C. R. “Testing the Fuel Economy Characteristics of Engine Oils” SAE Paper 790949 presented at Fuels and Lubricants Meeting, Houston, October, 1979.
- Sheahan T. J. and Romig, W. S. “Lubricant Related Fuel Savings in Short-Trip Cold Weather Service” SAE Paper #750675 presented at Passenger Car Meeting, Houston, June, 1975.
- Goodwin M. C. and Haviland, M. L. “Fuel Economy Improvements in EPA and Road Tests with Engine Oil and Rear Axle Lubricant Viscosity Reduction” SAE Paper #780596 presented at Passenger Car Meeting, Troy, June, 1978.
- Waddey, W. E. Shaub, H. Pecoraro J. M. and Carley, R. A. “Improved Fuel Economy Via. Engine Oils” SAE Paper #780599 presented Passenger Car Meeting, Troy, June, 1978.
- “Fuel Economy Measurement-Road Test Procedure - SAE J1082a” SAE Recommended Practice Revised March, 1977.
- “Fuel Saving Engine Oil Test Procedure” ASTM Fuel Efficient Engine Oil Test Development Task Force, April, 1979.