I've got a 2000 model tandem axle RangerTrail Trailer, with COOL Hubs.

One hub has milky oil - guess I have a seal going bad? Does anyone have a part number or parts list of what I need to change out the seal? Also, is there a step by step guide or instructions somewhere to tell me how to do it?

I also have one that has a slow leak, oil is going out, but not coming in. I've added oil twice this year so far. No milky residue to it, just a very very slow leak - maybe leaking oil when it gets warm going down the highway? Should I just keep adding oil or change out the seals?