Maybe I'm wrong, but I'm picturing a floating axle system for the one ton. If so, and you had gear oil in the drum, that would mean a bad hub seal. If you have gear oil on the rim, the axle flange isn't sealed to the hub. Axle flanges to hub take a gasket or you can use a thin film of silicone. Drums, whether mounted inside with studs to lock them in, or like modern times, slide from the outside over the studs, assemble to the hub dry, no gasket or sealant.
Putting a gasket on a floating axle typically makes no difference in the pumpkin.
