Fluid · Rear Differential
Rear Differential
for 1956 GMC Panel 302ci V6 · RWD
Fluid Type
SAE 80W-90 or 85W-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
Hypoid rear axle. Heavier duty axle often fitted with V6; capacity may be slightly higher.
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