An Investigation of Engine Oil Viscosity Loss in Passenger Car Service and Its Characterization 922295
Engine oil viscosity loss was investigated in highway service and in ASTM D-3945 Procedure A (diesel injector) shear stability test. The six oils involved contained various viscosity index improvers and had D-3945 100°C kinematic viscosity losses ranging from low to high. The losses in service were highest for an oil with one of the lowest D-3945A viscosity losses. D-3945A also did not correlate with service using 150°C high shear viscosity losses. D-3945A shearing severity was modified over a wide range, but it still did not rank oils like highway service. Results indicate a need for a more meaningful viscosity-loss bench test.
Citation: Dancy, J., Alexander, D., Lindholm, S., and DiBerto, D., "An Investigation of Engine Oil Viscosity Loss in Passenger Car Service and Its Characterization," SAE Technical Paper 922295, 1992, https://doi.org/10.4271/922295. Download Citation
Julian H. Dancy, David L. Alexander, Scott 0. Lindholm, David C. DiBerto
Texaco R&D, Texaco Additive R&D
International Fuels & Lubricants Meeting & Exposition
Passenger Car Engine Lubricants-SP-0939, SAE 1992 Transactions: Journal of Fuels & Lubricants-V101-4