I'm slowing getting around to draining/replacing oils in our newly acquired Series I 1958 diesel.
The manual says that the power steering takes SAE 20 oil, but several folks down here told me to use standard tractor fluid. After refilling the tank to about 1/4" above the gear, I ran the tractor and cycled the steering several times to remove air in the system. Two problems/questions:
1. The oil immediately turned milky and also overflowed out the vent after a few minutes running. The vent is about 3" high.
2. The steering wheel "sticks" at the first attempt to steer and then the steering works fine in both directions.
Should I have used regular engine motor oil (20 or 30 weight) or should I use some sort of hydraulic oil?
Is the sticking at first effort normal or is something else going on here?
Thanks for any advice or ideas.