Fluid · Rear Differential
Rear Differential
for 1974 GMC C2500 307ci V8 · RWD
Fluid Type
80W-90 or 85W-140 GL-5
Spec: GL-5
Capacity
4.2qt
3.97 L
Drain & Refill
4.2 qt
3.97 L
Change Interval
30,000 mi
48,270 km
Data quality
Book-style estimate
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Notes
Full-float rear axle. Capacity varies by axle ratio
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