Fluid · Manual Transmission
Manual Transmission
for 1966 Ford F-350 300ci I6 · RWD
Fluid Type
80W-90 GL-4
Spec: API GL-4
Capacity
7qt
6.62 L
Drain & Refill
7 qt
6.62 L
Change Interval
50,000 mi
80,450 km
Data quality
Book-style estimate
Not yet expert-verified. Have the real number? Correct it below — takes 30 seconds.
Notes
4-speed manual transmission. NP435 or T18 typical. GL-4 required, NOT GL-5