[diegokid]

Propane was used alot in the 70's. Some of the pros are the ability to use a setup that will let you run gasoline or propane, I think the power output was about 98% of gasoline then, no nasty exhaust fumes when burned in internal combustion it produces water and you engine will last much longer because it burns much cleaner. When I was stationed at Travis AFB my neighbor ran this on an old chevy truck. When he would have it smog checked they would jokeingly ask if his engine was running (EPA approved system).

Biggest con is filling it up, thats where the gasoline backup comes in. Dom't know what the cost is now for propane. There are a few other gasses that burn this clean that are non-petrol related also.