Quote: OK, so fifth gear it will be from now on.... but does anyone know why?
You leave the trany in gear so the bearings can't be spun by friction from the tail-shaft when the input shaft will not spin (held by the engine/clutch). The reason for this is that the tranny internals don't get any lubrication unless the input shaft from the engine is turning.
This is the reason why it says to keep the manual trans in gear. If by chance the output shaft starts to spin, you could end up with bad bearings from no lubrication in the trany. The Jeep Trans are lubricated from the input shaft, not the output shaft.
Just keep in in gear with transfer case in neutral. I choose to put mine in 4th, rather than 5th, no particular reason that is just the way I do it.