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THE EFFECT OF ENGINE OPERATION ON THE VLSCOMETRIC PROPERTIES OF MULTIGRADED ENGINE OILS
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Sector:
Event:
Mid-Year Meeting
Language:
English
Abstract
It has long been known from various sonic and mechanical shear tests that most commercial multigraded oils suffer from a serious loss in viscosity during relatively short periods of use. These tests, except in special cases, were generally regarded as inadequate. In order to conduct a meaningful study of the effect of shear degradation on polymer-containing oils, the authors set up an engine test.
The test, over a period of several months using three engines almost daily, proved reliable beyond all expectations. Tests of 15 different multigrade oils showed that seven did not qualify as SAE 30 oils after a running period equivalent to about 385 miles. All the remaining oils showed significant losses in viscosity in the same period.
The effect of shear degradation on the 0°F measured viscosity was varied. Most of the oils showed a proportionately lower viscosity loss measured at 0°F than at 210°F. Complicating factors indicate that the area merits further investigation.
Topic
Citation
West, J. and Selby, T., "THE EFFECT OF ENGINE OPERATION ON THE VLSCOMETRIC PROPERTIES OF MULTIGRADED ENGINE OILS," SAE Technical Paper 650445, 1965, https://doi.org/10.4271/650445.Also In
References
- SAE Handbook Crankcase-Oil Classification, Society of Automotive Engineers New York 1951 259
- Georgi C.W. “Viscosity Characteristics of Motor Oils at Higher Rates of Shear” Proceedings of the Fourth World Petroleum Congress, Section VI 211 1955
- Malone G. K. Selby T. W. “Relationship of Low-Temperature Cranking Resistance to Viscosity Characteristics of Multigrade Engine Oils” SAE Transactions 64 602 1956
- Fischl F.B. Horowitz H.H. Tutwiler S. T. “Cold Starting with V.I. Improved Multigrade Oils” SAE Transactions 608 1956
- Army-Navy Aeronautical Specification AN-0-366, Oil; Hydraulic, Petroleum Base June 24 1947
- Fenske M.R. Klaus E. E. Dannenbrink R. W. “Viscosity-Shear Behavior of Two Non-Newtonian Polymer Blended Oils” ASTM Special Technical Publication No. 111 June 1951
- Klaus E.E. Fenske M.R. “Some Viscosity-Shear Characteristics of Lubricants” Lubrication Engineering March-April 181 1955
- Selby T.W. “ASTM Investigation of Low-Temperature Viscosity of Engine Oils” ASTM Special Technical Publication No. 299 April 1962 136
- Selby T.W. Staffin G.D. “The Development of ASTM Low-Temperature Viscometric Techniques,” paper to be presented at the SAE Midyear Meeting May 1965 Chicago, Illinois
- CRC Report No. 374 “Development of Research Technique for Determining the Low-Temperature Cranking Characteristics of Engine Oils” March 1963 January 1964
- Lowther H. V. Meyer W.A.P. Selby T.W. Vick G. K. “Development of Research Technique for Determining the Low-Temperature Cranking Characteristics of Engine Oils” Preprint No. 805A, SAE Automotive Engineering Congress Detroit January 1964
- CRC Report No. 381 “Prediction of Low-Temperature Cranking Characteristics of Engine Oils by Use of Laboratory Viscometers” September 1964 November 1964
- Vick G.K. Meyer W.A.P. Selby T.W. “Prediction of the Low-Temperature Cranking Characteristics of Engine Oils by Use of Laboratory Viscometers” paper to be presented at the SAE Midyear Meeting May 1965 Chicago, Illinois
- Lawson N. D. “Determination of the Shear Stability of Non-Newtonian Liquids” ASTM Special Technical Publication No. 182 September 1955
- Proposed Method of Test for Shear Stability of Polymer-Containing Oils, Appendix XII, Compilation of “ASTM Standards on Petroleum Products and Lubricants,” October 1961 I 1160
- “Polymer Degradation of Flow Properties of Polymer Containing Fluids and Lubricants” ASTM Special Technical Publication No. 382, Published by ASTM May 1965
- “Kinematic Viscosity” ASTM Designation D-445-61, 1964 Book of ASTM Standards Part 17 165
- Selby T.W. Hunstad N.A. “The Forced-Ball Viscometer and Its Application to the Rheological Characterization of Mineral Oil Systems” ASTM Special Technical Publication No. 299 April 1962 98
- “Method for Determining Viscosity of Crankcase Oils at 0°F,” GM 4380-P, Manufacturing Standards, General Motors Corporation, Materials and Processes July 1961
- “Neutralization Number by Potentiometric Titration” ASTM Designation D-664-58, 1964 Book of ASTM Standards 17 258
- “Proposed Recommended Practices for Applying Precision Data Given in ASTM Methods of Test for Petroleum Products and Lubricants,”s ASTM Committee D-2 on Petroleum Products and Lubricants, Facts for Members, Appendix VII 47
- Selby T.W. “Non-Newtonian Characteristics of Lubricating Oils, ” ASLE Transactions I 68 1958
- Selby T.W. “Viscosity and the Cranking Resistance of Engines at Low Temperatures,” Sixth World Petroleum Congress June 1963