Fluid · Rear Differential
Rear Differential
for 1971 GMC C1500 454ci V8 · RWD
Fluid Type
80W-90 GL-5
Spec: API GL-5
Capacity
4qt
3.78 L
Drain & Refill
4 qt
3.78 L
Change Interval
50,000 mi
80,450 km
Notes
Heavy-duty 12-bolt full-floating rear axle typical. Limited-slip requires additive if equipped.
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.