Fluid · Rear Differential
Rear Differential
for 1989 Pontiac Firebird 305ci V8 · RWD
Fluid Type
80W-90 GL-5 with limited slip additive
Spec: API GL-5
Capacity
4qt
3.78 L
Drain & Refill
4 qt
3.78 L
Change Interval
100,000 mi
160,900 km
Notes
7.625" 10-bolt or 8.5" rear, add GM limited slip additive if equipped
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.