The Oxidation Stability of General Motors Proposed Factory-Fill Automatic Transmission Fluid 922371
Using standard industry tests, the oxidation stability of General Motors current factory-fill automatic transmission fluid (ATF) was compared to that of a proposed factory-fill ATF to be introduced for the 1995 Model Year. Full-scale transmission tests and Aluminum Beaker Oxidation Tests run at various temperatures showed that a proposed factory-fill fluid is substantially more resistant to oxidation than the current factory-fill ATF. Using Total Acid Number increase (Δ-TAN) as the measure of oxidation, a minimum of 35% improvement was obtained with a proposed factory fill. This improvement at least doubles the time to “perceived fluid failure” (Δ-TAN = 2.5).
Citation: Kemp, S. and Linden, J., "The Oxidation Stability of General Motors Proposed Factory-Fill Automatic Transmission Fluid," SAE Technical Paper 922371, 1992, https://doi.org/10.4271/922371. Download Citation
Author(s):
Steven P. Kemp, James L. Linden
Affiliated:
General Motors Powertrain, General Motors Research and Environmental Staff
Pages: 10
Event:
International Fuels & Lubricants Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Passenger Car Engine Lubricants-SP-0939
Related Topics:
Automatic transmissions
Transmission fluids
Corrosion
Transmissions
Aluminum
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