Chevrolet Silverado 4500HD/5500HD/6500HD Owner Manual (GMNA-
Localizing-U.S.-12102101) - 2019 - crc - 10/2/18
404
Service and Maintenance
Component
Component Vendor/Lubrication Type
Viscosity
Applicable Temperatures
Rear Axle
Rear Drive Axle(s)
Mineral Oil
—
Gear oil meeting
MIL-PRF-2105E, API MT-1, GL-5
75W
−
40 °C to
−
26 °C (
−
40 °F to
−
15 °F)
75W-80
−
40 °C to 27 °C (
−
40 °F to
80 °F)
75W-90
−
40 °C to 38 °C (
−
40 °F to
100 °F)
75W-140
−
40 °C and above (
−
40 °F
and above)
80W-90
−
26 °C to 38 °C (
−
15 °F to
100 °F)
80W-140
−
26 °C and above (
−
15 °F
and above)
85W-140
−
12 °C and above (10 °F and
above)
2837 Synthetic Lubricant.
Do not mix conventional (mineral bases)
lube with synthetic oil.
75W-90
All Temperatures