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The Viscosity Stability of Multigraded Crankcase Oils
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English
Abstract
The viscosity stability of polymer-thickened multigraded oils measured by the sonic oscillator failed to correlate with road test data when polymers of different chemical types were compared. A single cylinder Labeco CLR engine test procedure has been developed which correlates well with road tests and is independent of the chemical type of polymer used. Approximately 40 hr in the Labeco CLR engine are equivalent to 2000 miles of high speed driving.
Authors
Citation
Preuss, A., Stambaugh, R., and Radtke, H., "The Viscosity Stability of Multigraded Crankcase Oils," SAE Technical Paper 680070, 1968, https://doi.org/10.4271/680070.Also In
References
- Courtney R. L. “Some Effects of Crankcase Lubricant Viscosity on Engine Operation.” SAE Paper 660541 August 1966
- “The Effects of Polymer Degradation on Flow Properties of Fluids and Lubricants,” 1964
- Partride W. E. Ritcheske W. F. “The CLR Engine A Useful Tool for Evaluating the Sludging Tendencies of Motor Oils.” SAE Paper 300C January 1961
- May 10 1967