stewy said:
I will b using to tow horse boxes and rally cars . So on a wet road for instance , would it be grand to use it then for better grip while towing .
No. And especially not while maneuvering back and forth and in tight places.
is there something i could do to release the wind up after using the 4wd.
Windup is a bit of a misleading term. There's no rubber band being wound up or anything.
In a nutshell, the front and rear wheels are coupled via a central transfer box which has no differential. When going around corners, the front wheels travel along a different arch than the rear wheels. The rigid coupling means the only way this can work is if there's some slip between wheel and ground. On wet or dry tarmac that is not the case. This will cause severe binding (the truck actually bogs down) and eventually something goes >pop<.
Search this site for a more thorough explanation.
does wind up happen in all 4wd jeeps.
No. Some cars and trucks have on-road capable 4WD which usually involves limited-slip differentials both on the axles as well as between the front and rear axles. Some don't and must only be used off road. The Navs are like that.
One might ask: why doesn't everyone use LSDs? In short because they're ***** in many situations, and the fact the Navs handle so brilliantly in the snow is in large part due to their rigid 4WD where no electronics have to persuade some diffs to lock sort-of kind-of.
The best solution would be LSDs on all points (front, rear, center) with all of them manually lockable. The Defenders are like that AFAIK. But that's also the most expensive solution.
Sorry for all the silly questions lads

its just that i want to know if im going to do damage.
Yes you are.