98 5 speed oil thinned out I'm sure from driving and pulling camper got real noisey in 5th gear not just a whine after cooling down over night took it out for a drive and wasn't to bad just a light whine , I'm sure I need a replacement transmission but maybe I could drive it not using 5th for a while any one know if that could cause further damage to the transmission would like to use it for core but not broken up any thoughts from past experience ( the 5th gear and nut are in place I'm sure because of the way I repaired it a while back )