I noticed a rubber tube dangling from the rear of my jeep today, not connected to anything. On the my rear dana 30, this rubber hose was coming out of the axle tube on the passenger side just hanging. The other end was some kind of what plastic cap, kind of reminded me of a camelback water tube piece where you would be sucking the water from. I think I saw a spot where other similar looking hoses were coming from but it was dark out for me to try and find a spot to connect it.
I just got my jeep back from a shop and wondering if its coincidence? I will take pics tomorrow during the day.