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INSPECTION AND MAINTENANCE
66J22-03E
Gear Oil
Specified Gear Oil
When replacing gear oil, use gear oil with
the appropriate viscosity and grade as
shown in the charts below. We highly rec-
ommend you use SAE 75W-90 gear oil
(SAE 80W-90 for front differential oil, rear
differential oil and transfer gear oil).
Transmission/Extension case
54G095
Differential/Transfer case
65D594
Manual transmission
52D087
Transfer case
66J005
(1) Oil filler and level plug
(2) Oil drain plug
API GRADE
Transmission/
Extension case
GL-4
Transfer case
GL-5
(Hypoid gear oil)
Differential
Front
Rear
(1)
(2)
Gear Oil: 6, 10