Fluid · Manual Transmission
Manual Transmission
for 1975-1986 GMC C2500 6.2L V8 · 4WD
Fluid Type
80W-90 GL-4 gear oil
Spec: API GL-4
Capacity
3.5qt
3.31 L
Drain & Refill
3.5 qt
3.31 L
Change Interval
50,000 mi
80,450 km
Notes
SM465 4-speed manual or NP435 4-speed
Other fluid systems on this vehicle
A/C Refrigerant
A/C Refrigerant
Brake Fluid
1 qt
Brake Fluid
1 qt
Coolant
24 qt
Coolant
24 qt
Engine Oil
7 qt
Engine Oil
7 qt
Front Differential
3 qt
Power Steering
2 qt
Power Steering
2 qt
Rear Differential
5.5 qt
Rear Differential
5.5 qt
Transfer Case
3 qt
Automatic Transmission
12 qt
Automatic Transmission
12 qt
Washer Fluid
3 qt
Washer Fluid
3 qt