David, it all depends where in the country you're towing in. I have a 1998.5 Dodge 2500 Turbo Diesel, 4x4, club cab, short bed, that I used to use to go skiing, and drove it in the snow. We don't ski anymore, so the 4x4 is just a waste of fuel now. Drove from the SF Bay Area to Seattle for the SCCA Major over the Memorial Day weekend, and got about 12 mpg towing an empty 24' enclosed trailer to Portland, picked up my rental Wabbit, and then went on to Seattle. I wish I had a 2wd dually now.