At least your rig is new enough not to have a carburator and all the smog-prevention gear. Our first rig (an '85 26' Class C with a Ford 460) had all that rubbish. 6 mpg at sea level on a good day and less than 5 mpg in the mountains. We got rid of that POS after two seasons, then waited 6 years before getting our present Class A.
We got it for a very competitive price from its original owners who were having to give up the lifestyle because of the husband's health issues. His wife was in tears when we drove it away!
Happy to be rid of the Ford 460 and quite pleased with the V-10/F53 combination.
Our best wishes for many happy miles.
Seeing you're from Texas, I have to relate a story I heard when we lived in England. A Texas rancher was visiting a farm in the Yorkshire Dales and was trying to brag about the size of his spread. He told the farmer that he could "drive a car all day, camp out at night, drive all day the next day and still be on his ranch."
The old Yorshireman said "Aye, I had a car like that once".
Frank Damp -Anacortes, WA,(DW- Eileen)
ex-pat Brits (1968) and now ex-RVers, as of 08 Dec 14.