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I found some very interesting information on ATF operating temps. This
may answer some of the questions on transfer case and transmission
This was taken from the Borg-Warner site.
ATF will provide l00,000 miles of service before oxidation occurs under
normal operating temperatures of about l70 deg F. Above normal operating
temperatures, the oxidation rate doubles (useful life is cut in half)
with each 20 deg increase in temperature.
The approximate life expectancy at various temperatures is as follows.
|Less than 30 minutes
This information clearly shows why ATF coolers and the various
maintenance intervals are recommended for severe usage.
Above 300 deg F, the metals inside the transmission will warp and
distort in varying degrees depending on the severity of the overheat.
Charles 94 4dht
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