Fluid · Rear Differential
Rear Differential
for 1970-1976 Buick Estate Wagon 7.5L V8 · RWD
Fluid Type
80W-90 GL-5 gear oil
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
GM 12-bolt rear axle typical for 455-equipped wagons. Add limited-slip additive if equipped with Positraction.
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