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If the seals leak badly enough to wash out the grease, you will usually have great wet drool marks down the sides of your tires. It isn't something you can miss. Timkin roller bearings are perfectly happy with differential oil as a lubricant. They wouldn't run hot because of running a...

Hot hubs are generally caused by one of a couple of things: Dragging brakes, too much grease, or too tight of a wheel bearing adjustment. Tell me about how you packed the bearings with grease, and what kind of grease you used. -Chuck

One thing to amplify your statement: When the wheel bearing nuts are properly adjusted and tightened, you should be able to feel a slight bit of motion when you grab the outside edges of the tire and rock it by alternately pushing with your left hand, while pulling with your right, and then...

The usual thing that makes bearings hot is excess grease. Many mechanics think they need to stuff 5 lbs of grease in the hub, and to stuff the bearing tight full of grease. That makes the bearing pump grease which creates a lot of heat. I pack as much grease into the wheel bearing as I can...