Fluid · Rear Differential
Rear Differential
for 1966 GMC C2500 396ci V8 · RWD
Fluid Type
80W-90 GL-5
Spec: API GL-5
Capacity
3.5qt
3.31 L
Drain & Refill
3.5 qt
3.31 L
Change Interval
50,000 mi
80,450 km
Notes
Full-floating rear axle, capacity varies by ring gear size (typically 3.5-4.0qt for 10-bolt or 12-bolt)
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