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CORRELATION OF BENCH OXIDATION TESTS WITH TRANSMISSION TEST PERFORMANCE OF AUTOMATIC TRANSMISSION FLUIDS
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English
Abstract
Most laboratory oxidation tests are of little value for predicting the performance of transmission fluids in service. This is because catalytic conditions and temperatures are unrealistic, and the wrong criteria of performance are used. Usually the tests prescribe only a few analyses, and the fluid properties observed are not those most likely to indicate performance in a transmission. A revised Allison Type C Oxidation Test is shown to be useful in predicting transmission test results. The effects of base stock type and of additives are illustrated. Agreement of the bench test data with results in automatic transmission oxidation tests is shown. The low cost screening test has led to the development of highly stable, detergent, automatic transmission fluids.
Citation
FOEHER, E. and Calish, S., "CORRELATION OF BENCH OXIDATION TESTS WITH TRANSMISSION TEST PERFORMANCE OF AUTOMATIC TRANSMISSION FLUIDS," SAE Technical Paper 590181, 1959, https://doi.org/10.4271/590181.Also In
References
- Koenig E. F. SAE Journal 65 11 78 October 1957
- Automatic Transmission Fluid, Type A, Suffix A Identification General Motors Corporation November 1 1957
- Tentative Specification - Hydraulic Transmission Fluid, Type C, Allison Division General Motors Corporation February 10 1955
- Research Technique for Determining the Oxidation Resistance and Thermal Stability of Power Transmission Fluids CRC Designation L-39 February 1956
- Fluid - Automatic Transmission (Type A), Materials Specification M-2C33 Ford Motor Company October 24 1957