I started looking at diesel, but quit because they are hard to find, and when you do, they are much more expensive. I am looking at RVs from the 1990s to early 2000s. At some point along this...
We had a 35 ft Georgie Boy Landau and got 8.3 mpg with the 5star tune. Now have a 41 ft Thor, Mandalay Dsph and get 7.5 mpg. Much happer with the DS than the gas.