I noticed fluid on the back rim of my 58 3/4 step van. From different posts I read, I guessed rear wheel seal was bad. Brakes and hardware were layered in black gunk. The seal looked ok, but what do I know-I then read about other things that might cause leaks. Too much fluid, some axle vent? At this point I will likely replace the seal anyway. I also remember this leak coincided with my differential swap. Coincidence? Anyway, could someone please school me on what might going on.
