Up in Canada EH there are lots of propane powered vehicles. Newer fuel injected ones too. It is a great fuel and storage has to be the set back if there is one. In newer vehicles the fuel system is turned off and a Voodoo box (I like that word <img src="/forums/images/graemlins/kewl.gif" alt="" />) is used to control emission parameters to keep your engine light out. I don't recommend dual fuel as the two fuels are quite different and require different timing settings. Not too much room for two fuel cells in a 2dr Montero/Raider anyhow. It is written that if the technology was around one hundered years ago to put propane under pressure into cylinders we would not be using Gasoline today.<img src="/forums/images/graemlins/cheers.gif" alt="" />