Fluid · Rear Differential
Rear Differential
for 1971 GMC C2500 307ci V8 · RWD
Fluid Type
80W-90 or 85W-90 GL-5
Spec: API GL-5
Capacity
3.5qt
3.31 L
Drain & Refill
3.5 qt
3.31 L
Change Interval
24,000 mi
38,616 km
Notes
Full-floating rear axle. Use limited-slip additive if equipped with posi-traction
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