Fluid · Manual Transmission
Manual Transmission
for 1963 GMC Panel 230ci I6 · RWD
Fluid Type
SAE 80W or SAE 90 gear oil
Spec: API GL-1 or GL-4
Capacity
3.5qt
3.31 L
Drain & Refill
3.5 qt
3.31 L
Change Interval
30,000 mi
48,270 km
Data quality
Book-style estimate
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Notes
3-speed or 4-speed manual transmission. Some prefer ATF (Type A) in these vintage manuals for easier shifting