Wondering what kind of highway and local mileage guys are getting with 2010-2015 F350 SD 6.2 FX4, 6 speed AT, 8' bed ... while carrying, say, Northern Lite or Lance 8 to 9 foot floor layout TC's ... versus popups like Alaskan 8-10 cabover or Outfitter's Apex 8.
Thanks in advance for all answers.