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Viscometer for Predicting Low-Temperature Pumpability of Engine Oils
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English
Abstract
Most engine oils do not have pumpability problems unless used below the engine manufacturers' recommended operating temperatures. An orifice viscometer has been developed which shows promise of identifying the exceptions, those few oils which could have pumpability problems at temperatures above the recommended temperatures. If more extensive testing confirms the initial promise of this method, inclusion of orifice viscometer limits in engine oil specifications would provide consumer protection. The orifice viscometer shows that some oils can be more fluid at a low temperature than at a higher temperature.
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Citation
Alexander, D. and Rein, S., "Viscometer for Predicting Low-Temperature Pumpability of Engine Oils," SAE Technical Paper 770632, 1977, https://doi.org/10.4271/770632.Also In
References
- “Viscometry and its Application to Automotive Lubricants,” SAE Publication SP-382 1973
- “Engine Oil Viscosity Classification - SAE J300b,” SAE Handbook 1976
- “Evaluation of Laboratory Viscometers for Predicting Cranking Characteristics of Engine Oils at 0°F and -20°F,” CRC Report No. 409 April 1968
- Meyer W.A.P. Selby T.W. Stringer H.R. “Evaluation of Laboratory Viscometers for Predicting the Cranking Characteristics of Engine Oils at 0F and -20°F,” SAE Paper No. 680065 , presented at SAE Automotive Engineering Congress Detroit Michigan January 10 1968
- Rein S.W. “Low Temperature Viscosity of Automotive Engine Oils,” LUBRICATION, 54:5 1968
- Hart W. February 5 1971 letter to W. A. Wright
- “Low-Temperature Pumpability Characteristics of Engine Oils in Full-Scale Engines” ASTM Data Series Publication DS-57 1975
- McMillan M.L. Stewart R.M. Smith M.F. Rein S.W. “Low-Temperature Engine Oil Pumpability in Full-Scale Engines,” SAE Transactions, Vol. 8 1975 l684 l697
- Pecora R.J. Jr. December 1 1975 letter to R.M. Stewart, which is Attachment VIII to minutes of December 8 1975, meeting of Task Force on Engine Oil Pumpability, ASTM Committee D-2, RDD-VIIC
- Pecora R.J. Jr. June 21 1976 meeting of Task Force on Engine Oil Pumpability, ASTM Committee D-2, RDD-VIIC Pecora R.J. Jr. June 18 1976 letter to R.M. Stewart, Task Force Chairman
- Shaub H. “Application of Rotary Viscometer to Predict Engine Oil Borderline Pumping Temperature (BPT),” report presented at December 8, 1975, meeting of Task Force on Engine Oil Pumpability, ASTM Committee D-2, RDD-VIIC December 8 1975