The Oxidation Stability of General Motors Proposed Factory-Fill Automatic Transmission Fluid
922371
10/01/1992
- Event
- Content
- 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).
- Pages
- 10
- 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.