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Test Stand Evaluations of Commercial Lubricants with Methanol and Tertiary Butyl Alcohol Blends
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English
Abstract
With the emergence of oxygenates as blending components in unleaded gasolines in the last few years, concern has been voiced as to the effects these materials may have on the wear characteristics of commercial engine oils. To help define these effects, if any, Atlantic Richfield initiated a program whereby gasoline grade tertiary butyl alcohol and methanol/gasoline grade tertiary butyl alcohol were blended into a base unleaded gasoline at various concentrations and individually tested with several commercial SF engine oils in a series of modified ASTM Sequence VD tests.
Although it is known that neat methanol greatly increases engine wear rates, the tests conducted here indicate that the alcohol blends up to 4.5V% methanol/4.5V% GTBA are compatible with properly formulated engine oils and do not increase wear rates over that of unleaded gasoline. Other parameters such as sludge and varnish were also found to be unaffected or slightly improved with the addition of the alcohol(s) to the base test fuel.
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Citation
DeJovine, J., Drake, D., and Mays, M., "Test Stand Evaluations of Commercial Lubricants with Methanol and Tertiary Butyl Alcohol Blends," SAE Technical Paper 830242, 1983, https://doi.org/10.4271/830242.Also In
References
- United States Environmental Protection Agency “Grant of Application for a Fuel Waiver by Atlantic Richfield Company -Decision of the Administrator” Federal Register 46 110 November 16 1981
- Owens E. C. Marbach H. W. Jr. Frame E. A. Ryan T. W. II “Effects of Alcohol Fuels on Engine Wear” USAFLRL, SWRI, SAE June 1980
- Balsely W. H. Edwards C. F. “Wear Characteristics of Fleet Vehicles Operating on Methyl Alcohol” University of Auckland and University of Santa Clara, SAE October 1981
- Sequence VD Test. ASTM Special Technical Publication 315H Part III 1980
- ASTM Test Monitoring Center VD Operationally Valid Data Set
- Marbach, Jr. H. W. Frame E. A. Owens E. C. Naegeli D. W. “The Effect of Alcohol Fuels and Fully Formulated Lubricants on Engine Wear” USAFLRL, SWRI, SAE October 19 22 1981