I have an '01 Chevy 8.1L 4x4 CC dually and love the truck. Others are spot on with their comments about the mileage. It gets around 12 around around town and 7 while pulling. Remember though, that was 14,000 pound high profile 5th wheel. It uses about 1 qt of oil ever 1500 miles. No big deal as I bought it to PULL. However, my patience, even with the Allison transmission, became short when pulling the trailer and all of the downshifting associated with a camper of that size. Now, it pulls my 9,000 pound toyhauler very well at about 8-8.5 mpg back and forth to deer camp. For the 5th wheel, I bought an F350 6.4L diesel to pull it with and MAN what a difference. I now have just traded the 6.4 for a 6.7 and have yet to pull the 5er.
But as others have hinted at, if you buy a bigger truck, as some point you will buy a bigger camper. So go ahead and bite the bullet and get a diesel first and then you can pull whatever your heart desires afterwards. Oh, and get a 3500 so you can haul the 5er with ease when you get one
. Good luck in your hunt, Merry Christmas and happy camping!
2012 Sandpiper 365SAQ weighing @ 15k, Onan, 2nd air, slide toppers, TST
2013 F350 6.7L Lariat 4x4 CC DRW,Viair 1007, Ride-Rites, Edge CTS, B&W
2001 Chevy 3500CC DRW 4x4, 8.1L, 4.10 gears w/ Detroit TrueTrac
2001 Ford Excursion Limited 4x4 7.3L,V/B Spring Mod, ProComps, Hellwig Swaybar, & other 'Necessities'