Driving 1936 Farmall F-12 with Heisler Overdrive

Took the Farmall F-12 on a drive around the barnyard quick while dumping a load of corn. It has a Heisler Overdrive on it that increases the top speed to 10-12 mph. In the video I am in 3rd low and shift to 3rd high.
Farmall 350 diesel is on the auger and John Deere 4020 gas is pulling in.