That backs up what I found when I did an online search to see what mileage motor homes with the V10 get, as that is a major factor in any decision of mine.
that is the reason I looked for my Serro Scotty- 95 dodge 25' with the cummins 5.9 and 4x4 for 5 years. Just completed a 3200 mile trip and averaged 16 mpg fully loaded- cheep trip at $2.20/gallon. I'll let it go for $30K