Fluid · Manual Transmission
Manual Transmission
for 1964 Chevrolet Impala 409ci V8 · RWD
Fluid Type
SAE 80W-90 GL-4
Spec: 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
Heavy-duty 4-speed manual (M20 or M21). Do NOT use GL-5 due to brass synchronizers