4WD vs 2WD

[Barefoot]

You don't have to stop to put it in 4Hi Bananas,it can be engaged upto 70-80 k's.

[wendaloo]

Sal

Is it a dirt road that has a lot of traffic?

If so just drive normally, and maybe a bit slower. I don't think there would be a need to use 4/2wd at all.
If at all I would think 4hi would get you through ok.

[jeepgirl]

I agree with what Wen has said. I wouldnt bother with changing it into 4x4. I have a road like that near a friends place. I suppose i should slow down but that's why i have my jeep lifted and on bigger wheels. I figure all the pot holes clear out all the dried mud underneath.

[Mooreyfiveo]

If it's a bad enough dirt road to bump you off line then you do need to either slow down or 4wd hi can help, but what speeds are you doing? As mentioned earlier you can supposedly do 80 in 4wd hi, which means it's been designed and tested higher but I think if you can go faster than 80 in 4wd the road is probably not rough enough to need 4wd. Am I talking in circles?

Also you can change to 4wd hi while moving, but I think you have to do it while travelling in a straight line as your wheels need to be travelling at the same speed.

At the end of the day the road needs to be bumpy enough, or have enough loose gravel to allow the wheels to travel at different speeds and release any diff wind up.

I've been told that after being in 4wd, jack up a wheel and see if it spins on it's own which is the 'wind up' releasing itself. Not sure how true this is, but if yours did spin then I would suggest the road has too much grip for 4wd and you need to slow down.

I have used 4wd hi on a number of sandy corrugated roads and have had no problems.