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 Cel 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 Cel 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.
An investigation of engien oil viscosity loss in passenger car service and its characterization
Die Erforschung des Viskositätsverlustes von Motoröl bei PKW's während des Betriebs und deren Charakterisierung
SAE Technical Papers ; 1-12
1992
12 Seiten, 15 Bilder, 3 Tabellen, 12 Quellen
Aufsatz (Konferenz)
Englisch
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