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Transmission Fluids
Background & Properties
Important Transmission Fluid Properties
July 2017
Reviewing the different friction characteristics of transmission fluids makes it clear how the incorrect fluid choice could
be a serious detriment to equipment and its operation. Proper transmission fluids are a wise investment that provide
return in the long run.
TRANSMISSION FLUIDS: A CHARACTERISTIC COMPARISON
FLUID FEATURES TO-4 FLUID THF Dexron III HD/
TES-389
Friction Grabby Most
Slippery
Slippery
EP/AW Very Good Best Good
Oxidation Good Good Best
Low Temperature Poor Good Best
Water Sensitivity Wet Anti-foam Test Very Good Not Tested
Color Dyed (some) ___ Dyed
Viscosity Grade Kv at 100
degrees C
Various (6-26) 10W-30
(9.5-10.5)
0W-20
(7.0-7.5)
D 5
