Yes, that is why I asked what type you put in it.
Many years ago I had a Case 446 garden tractor that acted similar if you used hydraulic oil instead of the motor oil it was designed for.
The steepest known side slope was 27 degrees on the back of a dam.
No problem climbing steep and rugged slopes. On loose terrain you can turn around and use the boom to push going up.
This is what I did to remove the stump jumper on mine:
Put another wrench on the head of the big bolt and did "lefty loosely" forcing the nut down putting tension on the chain.
The little bolt through the shaft, kept it from falling when it broke loose