I agree with Schludwiller. If you have it use it. I hear comments from many of my co-workers along the lines of "why spend the money on a 4x4, how often do we get snow deep enough to need it?". They seem to have the misconception that 4x4 is only used in snow deep enough to get cars stuck. I always explain that I use 4x4 a lot, anytime the roads get slippery, and that's not necessarily when the snow is deep. After I explain it they seem to change their opinion. Unfortunately that's often the people who already own a 4x2 and put a lot of weight in the back. In my opinion adding weight in a 4x2 just gets you back to being about as good as a rear wheel drive car. The only advantage of the 4x2 truck is extra ground clearance which reduces getting "hung up" on deep snow.

Al