I went from a 2006 5.4 4wd F150 to a 2015 F250 4wd 6.2.Both were Scabs
these are my observation after 5,000 miles,with over 100 miles on a 4x4 trip on the Bradshaw trail in the SoCal desert
I would not do anything to mess up the warranty
I saved about $5000 off of a HD150
The 6 speed is awesome,as is the electric locker
The 6.2 gets about 1Mpg less than the 5.4
Once you get going the power is better
Once you are in 4wd the Traction control is turned off
This comparison Is with the same camper
I have 400mi range with camper@ 12.3mpg
I have over500 mi range Without @ 15.5