Fluid · Manual Transmission
Manual Transmission
for 1989 Porsche 911 3.2L H6 · RWD
Fluid Type
75W-90 GL-4 or GL-5
Spec: API GL-4 (preferred) or GL-5
Capacity
3.2qt
3.03 L
Drain & Refill
3.2 qt
3.03 L
Change Interval
30,000 mi
48,270 km
Data quality
Book-style estimate
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Notes
G50 transmission introduced mid-year on some models; 915 on early production. Both use similar fluid.