Well, I bought this 1996 Dodge 2500 Van today, it was just too good of a deal and very very well maintained...and I liked the fact that it has a 3 speed automatic instead of the overdrive....much cheaper if anything ever goes wrong

It has 76,000 miles and runs and drives fantastic. The only 2 things that bother me.....is it doesn't just pop off, sometimes have to crank a bit......and the rear end is howling, probably sounds worse because it's an empty cargo van....the original owner took very good care of it and he just changed the rear end lube.....would this rear take any kind of special additive ? It does have 3.90 gears, not sure if it is a suregrip