Maintenance 139
Transmission and Rear Axle Maintenance
Transmission
General
Transmissions should not be operated con-
sistently at temperatures above 250
F
(120
C). If the temperature reaches 285
F
(140
C), stop the vehicle to let the tempera-
ture go down (see the vehicle Operator’s
Manual for information on the optional
transmission temperature gauge). Operating
temperatures above 250
F (120
C) increase
the lubricant’s rate of oxidation and shorten
its effective life.
If the transmission oil temperatures are
consistently high, change oil more often or
install an oil cooler. With lengthy or contin-
uous driving at altitudes of more than
6,000 ft (2,000 m) above sea level, more
frequent oil changes will be necessary.
NOTE! Always dispose of oil according to
Federal or local regulations. Used oil
disposed of in nature or waterways contam-
inates our drinking water and kills wildlife.
Take all used oil to a recycling or waste
collection center.
W4001387
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