Chevrolet Low Cab Forward 6.7L Diesel Engine 6500XD (GMNA-Localizing-
U.S.-15749874) - 2022 - CRC - 12/2/21
214
Vehicle Care
Rear Axle (Gear Oil Viscosity Chart)
Gear Oil Viscosity Chart
Select appropriate gear oil in accordance with the table below. It is important to select the
viscosity appropriate for the temperature at which your vehicle operates. Use the following
table for making correct selections.
This Gear Oil Viscosity Grade Chart shows
general information.
Rear Axle (Oil Level Check)
Rear Axle Differential Gear Oil
The rear axle differential gear oil level must
be checked and it must be changed
according to the Maintenance Schedule. See
Use the oil quantities indicated later in this
section only as guidelines when changing
the rear axle differential gear oil.
For axles without drain plugs, a carrier bolt
is used to drain the oil. There is a carrier
bolt on the lower section of the front of the
axle with
“
Drain
”
stamped next to it.
Remove this carrier bolt and drain the oil.
Tighten the carrier bolt to the specified
torque. Carrier bolt tightening torque is 193
–
214 Nm (19.7
–
21.8 kgFm/142
–
158 lb ft).
After changing the oil, ensure that it is at
the correct level.
Drained oil must be disposed of in a method
conforming to the regulatory requirements
in your state.