Originally Posted by Destination Unknown
Thought about 7 to 8 on the v10. As we will be looking for a B or C class for extended trips in USA, are the Chevy v8s any better on fuel.
Give you an idea (My latest trip)
Renton, Wa. - Sedona, Az
Total miles - 3099 (US) miles
Total days - 18 (Dec 21, 2020 - Jan 7, 2021)
Total oil consumed - ~ 1/2qt (454 TBI 7.4L w/4L80E) 1994 Fleetwood Southwind Storm 28ft (using Valvoline full synthetic 10w-30)
Total fuel cost - $1008.XX (Lowest price paid for gas was $1.75 per gallon just outside of Laughlin.) That was end of Dec 2020
Odometer on RV currently - 68,295
MPG - low of 7.77mpg and a high of 9.70mpg
High MPG was between Livermore, Ca. and Bakersfield, Ca. On the overall trip I hit the 9.XX range (3) times. After Sedona, Az. I headed south and skirted Phoenix then onto Huntington Beach, Ca. (real home). There for a few days then headed north back to Renton (home away from real home).