Quote Originally Posted by GamblerRex View Post
You answered your own question. Although oil hubs look sweet you are absolutely right about your reasoning.
If you loose your oil cap you burn em up, where as with grease you can still go for miles....
The oil hubs are a pain in the rear. The seals will leak water in over time, or if the axle is too warm (like from trailer brakes) and it enters the water without cooling, the hubs will draw in water.

One time I had a trailer brake that didn't release completely - it was lightly dragging on the rotor - the axle heated up and the oil hub blew out from the expansion of the heated oil. The oil hit the rotor and caught fire. It was a dang mess. I couldn't pull it any farther because there was no lube on the bearings. Luckily I was about a mile from the house, and was able to pull off the tire and limp home since I've got a tandem trailer.

I switched out from the oil hubs to grease for the very reason you mentioned. I experienced it firsthand, on the side of the highway. Not fun. Had it been regular grease, I would have made it home and could have dealt with the issue there.