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In-Service Low Temperature Pumpability: Field Performance vs. Bench Tests
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 10, 2012 by SAE International in United States
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The most important property of the engine oil is its ability to reach all engine parts. Once there, it can build an oil film which protects these parts from wear and ultimately from destruction. No other lubricant property is relevant if the oil cannot be delivered to the critical engine parts. Thus engine oil pumpability, especially pumpability at low temperatures when the viscosity of the lubricant is the highest, is crucially important. The crankcase lubricant industry has recognized this, in requiring good low temperature pumpability for the last three decades.
While good low temperature properties of the fresh oils are a necessary requirement for a lubricant, they are not sufficient to ensure the lifetime performance of the oil in the engine. The oil gradually ages in the engine and its properties, including low temperature pumpability, change. A number of bench and engine tests have been developed to predict low temperature pumpability of the aged oils, such as Sequence IIIGA, Romaszewski Oil Bench Oxidation (ROBO) and a new low temperature pumpability test under development by CEC TDG-L-105 group.
In this paper we examine the low temperature pumpability of several oils in a modern 2010 emission complaint Heavy Duty Diesel (HDD) engine. We show that good fresh oil low temperature properties such as MRV TP-1 apparent viscosity or gelation index do not guarantee good field performance. We also evaluate a number of bench tests as predictors of field ageing and low temperature performance of the used oils, and we show that while some bench tests exhibit reasonable correlation with the field, not all bench tests can predict failing performance in the field.
CitationOberoi, S. and Goldmints, I., "In-Service Low Temperature Pumpability: Field Performance vs. Bench Tests," SAE Technical Paper 2012-01-1708, 2012, https://doi.org/10.4271/2012-01-1708.
- Shaub, H., Smith, M., and Murphy, C., “Predicting Low Temperature Engine Oil Pumpability with the Mini-Rotary Viscometer,” SAE Technical Paper 790732, 1979, doi: 10.4271/790732.
- Henderson, K., Manning, R., May, C., and Rhodes, R., “New Mini-Rotary Viscometer Temperature Profiles That Predict Engine Oil Pumpability,” SAE Technical Paper 850443, 1985, doi: 10.4271/850443.
- ASTM D 4684, “Standard Test Method for Determination of Yield Stress and Apparent Viscosity of Engine Oils at Low Temperature”, 2001 Annual Book of ASTM Standards.
- Koenitzer, B., Lai, P., and May, C., “A Study of Gel Index and MRV Effects on SAE 5W-30 Pumpability,” SAE Technical Paper 982641, 1998, doi: 10.4271/982641.
- Webber, R., George, H., and Covitch, M., “Physical Processes Associated with Low Temperature Mineral Oil Rheology: Why the Gelation Index Is Not Necessarily a Relative Measure of Gelation,” SAE Technical Paper 2000-01-1806, 2000, doi:10.4271/2000-01-1806.
- Papke, B., Dahlstrom, M., Mansfield, C., Dinklage, J. et al., “Deterioration in Used Oil Low Temperature Pumpability Properties,” SAE Technical Paper 2000-01-2942, 2000, doi:10.4271/2000-01-2942.
- Li, S., Devlin, M., Liesen, G., Tom West, C. et al., “Low Temperature Rheology of Engine Lubricants: Investigation of High Used Oil Pumping Viscosity,” SAE Technical Paper 2000-01-2944, 2000, doi:10.4271/2000-01-2944.
- Rhodes, R., “Low-Temperature Compatibility of Engine Lubricants and the Risk of Engine Pumpability Failure,” SAE Technical Paper 932831, 1993, doi: 10.4271/932831.
- May, C. and Habeeb, J., “Factors Affecting the Low Temperature Pumpability of Used Engine Oils,” SAE Technical Paper 872049, 1987, doi: 10.4271/872049.
- Batko, M., Florkowski, D., Devlin, M., Li, S. et al., “Low Temperature Rheological Properties of Aged Crankcase Oils,” SAE Technical Paper 2000-01-2943, 2000, doi:10.4271/2000-01-2943.
- Bansal, J.G., NPRA International Lubricants and Waxes Meeting, Houston, TX, November 11-12, 2004
- Bansal, J., Chu, C., and Outten, E., “In-Service Low Temperature Pumpability of Crankcase Lubricants- Effect of Viscosity Modifiers,” SAE Technical Paper 2004-01-1932, 2004, doi:10.4271/2004-01-1932.
- Bansal, J.G., ICIS Asian Base Oils and Lubricants Conference, Kuala Lumpur, June 20-21, 2007
- Goberdhan, D., Goldmints, I. “In-Service Low Temperature Pumpability Issues of Crankcase Lubricants”, Proceedings of 16th International Colloquium Tribology Automotive and Industrial Lubrication, 2008
- Covitch, M.J., Weiss, J., Kreutzer, I. M., “Low-Temperature Rheology of Engine Lubricants Subjected to Mechanical Shear: Viscosity Modifier Effects,” Lubrication Science 11-4, 337-364, 1999
- McGeehan, J. and Eiden, K., “Low Temperature Oil Pumpability in Emission Controlled Diesel Engines,” SAE Technical Paper 2000-01-1989, 2000, doi:10.4271/2000-01-1989.
- Stehouwer, D., Shank, G., Herzog, S., Hyndman, C. et al., “Sooted Diesel Engine Oil Pumpability Studies as the Basis of a New Heavy Duty Diesel Engine Oil Performance Specification,” SAE Technical Paper 2002-01-1671, 2002, doi:10.4271/2002-01-1671.
- Galbraith, R. and May, C., “A Cold Start and Pumpability Study of Fresh and Highly Sooted Engine Oils in 1999 Heavy Duty Diesel Emission Engines,” SAE Technical Paper 2003-01-3224, 2003, doi:10.4271/2003-01-3224.
- Andreae, M., Fang, H., and Bhandary, K., “Biodiesel and Fuel Dilution of Engine Oil,” SAE Technical Paper 2007-01-4036, 2007, doi:10.4271/2007-01-4036.
- Zdrodowski, R., Gangopadhyay, A., Anderson, J., Ruona, W. et al., “Effect of Biodiesel (B20) on Vehicle-Aged Engine Oil Properties,” SAE Int. J. Fuels Lubr. 3(2):579-597, 2010, doi:10.4271/2010-01-2103.
- Okamoto, K., Kaneko, T., Kakihara, T., Tsuchihashi, K. et al., “Study of the Impact of High Biodiesel Blends on Engine Oil Performance,” SAE Int. J. Fuels Lubr. 5(1):146-153, 2012, doi:10.4271/2011-01-1930.
- Goldmints, I. “Lubricants in the Age of Biodiesel”, Lube Magazine, No. 90, 19-22, 2009
- Goberdhan, D. and Goldmints, I., “Assessment of Ageing Mechanisms in Lubricants and Their Effects on Retained Low Temperature Pumpability of Top Tier Oils,” SAE Technical Paper 2010-01-2177, 2010, doi:10.4271/2010-01-2177.