My 2006 Dodge 3/4 ton two wheel drive short bed has 33,000 miles and I had to install a new axle seal. It came out in two peaces. Really bad shape. I also change thr oil in the rearend. It look in good shape. I pull a enclose car trailer with a car in the trailer most of the time. I was surpris that I needed have a rear seal go bad that early with low miles on the truck. My mileage is not that good. I get 11 to 12 most of the time towing the last trip going to Ga. I guess that normal with a automatic transmission. I was in tow-haugh most of the time. I went to the V-8 National meet in Ga. I took my 50 Ford Crestliner Maroon & Black. It only has 37,000 miles on it. Not bad for a old junker as dad use to call my cars.