motor home mpg

Floridastorm wrote:
Hello Folks,

I am a mechanical idiot (Contracts Manager my entire career)and know next to nothing about engines with the exception to what I read. Am still considering a motor home for getting around Florida and Georgia in retirement.

Can you help me with the reasoning behind the inability of engine manufacturers to produce an RV engine that can get decent gasoline mileage. I worked with engineers my entire career and don't really understand why they would not want to build this type of engine considering the hundreds of thousands and possibly millions of motor homes built every year. Is it a physical problem or scientific? I would imagine this would address the trucking industry also.

Also, is it better to use premium gasoline compared to regular in a motor home? How about synthetic oil as compared to standard oil?

Motorhomes are heavy and square,not conducive to a good mpg no matter what engine they use..
Still there are some interesting inventions that would improve ice efficiency,why dont automakers use them is one of those million $ questions
For the mechanicaly inclined heres a couple

http://www.hotrod.com/articles/hrdp-1009-what-ever-happened-to-smokeys-hot-vapor-engine/

http://www.coatesengine.com


Wonder how much would mpg improve if motorhome design was similar to this bullet train
https://youtu.be/ybWFO_YbKgE