Fluid · Manual Transmission
Manual Transmission
for 1974 GMC C1500 292ci I6 · RWD
Fluid Type
Dexron II ATF or 80W-90 GL-4
Spec: GM Type A Suffix A or API 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
SM465 4-speed manual typical. GM recommends ATF, but GL-4 gear oil acceptable