confusion over weight I can tow

luggage wrote:
I want to up grade from a TAG pull behind to a 5th wheeler and I am getting different weights that I can tow safely. I have called Ford dealers, RV dealers and even the Ford Motor co and all tel me I can pull anywhere from 8000 lbs (I know this can't be right), 10,000 lbs to 12,000 lbs to 13,400lbs. I have a 2002 Ford Diesel crew cab w/70,000 miles,7.3L engine and a 3.73 rear end ratio. The Ford people told me the truck came with a standard trailer towing package. I am finding too many folks seem to throw caution to the wind and tell me "man you can pull anything with that truck" I know that's, BS. I want to buy something that I can pull on the flats and hills in Alabama but also pull in the mountains in Tennessee. Advice is appreciated.