Technical Paper
Tailoring Automatic Transmission Fluid Shift Quality in the Laboratory
1965-02-01
650466
The influence of lubricant formulation and service degradation on automatic transmission shift quality was studied in full scale transmission cycling tests. Fluid frictional degradation was found to follow a well defined pattern. This pattern is influenced by fluid formulation as well as transmission environment. Both fluid oxidation and selective additive degradation affect the rate of progression through this pattern.
