I towed my 85 Ramcharger with my 97 Ram 1500 4x4 grossed out at around 14500 with trailer both trucks and gear. I got 9.5-10mpg with it and it pulled fine. I clicked overdrive off while towing. I had 285/75R16's on it with 3.55 gears so at 65mph I was sitting about 2750rpm. I put a hughes towing cam and hughes heavy duty heads on the motor, stock exhaust, stock intake, I did rebuild the trans at 100k and put some goods in it. Ended up swapping the rear end out for a dana 70 out of a 3/4 ton dodge mostly for the disc brakes. Never gave me the least bit of trouble, tough truck, did everything I asked it to and I beat on it pretty hard. Towing hills wasn't too bad just had to keep my foot in it, sometimes it would downshift to pull a big one then I was seeing 4500rpm to keep 60-65mph, never seemed to mind though, never got hot, the stock springs had good carrying capacity much better than 1/2 ton fords and chevies. Sold that truck for $4500 with 177k on the clock and bought my 05 cummins to pull my 30ft 10 ton goose and two rigs. Don't think my 97 would do very well pulling that but just one truck on a tag along no problem. Around town mileage was 13.5 hwy was around 14-14.5 if you stayed around 70. Every truck has its problems you'll find out what they are if you load them up real quick too, but I would put my old dodge up against any other brand 1/2 ton pulling the same weight any day, and face it if your towing another truck it doesn't matter what your pulling with you'll be burning a bunch of dinosaurs.