X2. i always keep mine in 1 or 2 and it does excellent.FrankB said:I have an S model, other than the locker its pretty much the same. I really like the AT for off road driving. This particular AT has really good control. The trick, I think, is to remember not to use D(rive) when off road, but rather use 4, 3, 2 or 1. By always taking it out of D(rive) when I put it in 4WD I've never had a problem with unexpected upshifts.