Originally Posted by eDJ
I've worked with fork trucks which run Propane and they get much longer service lives than those running gasoline. If you have to pull one down you'll be amazed at how clean they are inside.
We do this at work. The engine has both a fuel tank and propane tank. There is NEVER any fuel in it. While honestly you would be better using fiel because you can stop at any servo and get it if you're going long distances.