Fluid · Rear Differential
Rear Differential
for 1978 Oldsmobile 98 6.6L (403 cu in) Oldsmobile V8 (optional) · RWD
Fluid Type
80W-90 GL-5
Spec: API GL-5
Capacity
4.25qt
4.02 L
Drain & Refill
4.25 qt
4.02 L
Change Interval
50,000 mi
80,450 km
Notes
8.5" 10-bolt rear axle with limited slip may require friction modifier
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