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Studies on the Interchangeability of Group III Base Oils in ATF
Technical Paper
2005-01-3859
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
We have compared five different, commercially produced, API Group III base oils in a next-generation, OEM automatic transmission fluid (ATF) formulation. One objective of this work is to understand the impact of base oil selection on the performance properties of finished ATF. This may help us to develop technically sound criteria for allowing interchange among premium Group III base oils in both factory-fill and service-fill ATFs. The performance data, measured from lab bench tests, include such properties as seal swell, low temperature viscometrics, oxidation life, and LVFA static and dynamic friction. Certain properties of the base oils, such as low temperature viscosity and oxidation stability, have a strong impact on the ATF performance. However, there are many chemical similarities between the Group III base oils, and this results in little to no differences observed in many performance areas. We also include comparisons of the same formulation made with typical Group I and II base oils.
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Zakarian, J., De Weerdt, M., and Watts, R., "Studies on the Interchangeability of Group III Base Oils in ATF," SAE Technical Paper 2005-01-3859, 2005, https://doi.org/10.4271/2005-01-3859.Also In
References
- Henderson, H.E. Swinney, B. “High Quality Base Oils for Next Generation Automatic Transmission Fluids” SAE Paper 982666
- Watts, R.F. Noles, J.R. Pujara, N. Trautman, C.R. “The Impact of Evolving Automatic Transmission Fluid Specifications on Base Oil Selection” SAE Paper 2001-01-1992
- Moon, W.S. Yang, S.W. “Use of VHVI Base Oils for High Performance ATFs” International Symposium on the Tribology of Vehicle Transmissions Japan 2001
- Gatto, V.J. Grina, M.A. Tat, T.L. Ryan, H.T. “The Influence of Chemical Structure on the Physical Properties and Antioxidant Response of Hydro-cracked Base Stocks and Polyalphaolefins” J. Synthetic Lubrication 19 1 April 2002
- Watts, R.F. Nibert, R.K. “Prediction of Low Speed Clutch Shudder in Automatic Transmissions Using the Low Velocity Friction Apparatus” 7 th International. Colloquium on Automotive Lubrication Technische Akademie Esslingen Jan 17 1990
- Mäki, R. Ganemi, B. Olsson, R. “Wet Clutch Transmission Fluid for AWD Differentials - Base Fluid Influence on Friction Characteristics” Proc. Of International Colloquium on Tribology Esslingen, Germany 2004
- Sugiyama, T. Arakawa, Y. Maeda, M. Hamaguchi, H. Kinker, B. “Influence of the Base Oil and Viscosity Index Improver on Friction Characteristics of Wet Friction Materials” Proc. 2005 International Symposium on the Tribology of Vehicle Transmissions Feb 16-18 Tsukuba, Japan 233 2005
- Tipton, C.D. Schiferl, E.A. “Fundamental Studies on ATF Friction I” SAE Paper 971621