I tow a 27ft lightweight starcraft w/ my '02 2wd w/ 170,000 on it w/o issues... keep what you get under the max weight (5250#, i think) , and get the trailer as long as you can ,as a long tongue aids in towing stability, IMO... You'll know it's back there, and you won't set any speed records, and you'll get 10-11 mpg.... Slideouts add 700-1000 lbs... The frontal area is important, minimize it if you can.. You'll also want equalizer bars and anti-sway control, and a tranny cooler..Change out your fluids before towing... One big improvement to mine was switching to LT tires, as the sidewalls are much stiffer and make towing in crosswinds almost a non-issue... do a search on towing, and you'll find a lot of info on the subject..
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