one of the reasons we run propane on rock buggies is so when we are done, and put the buggy up for a while, all you have to do is turn off the gas, no carbs to gum up, no fuel pumps to die, no gaskets or seals to leak, no gas to go bad. Just turn the valve off and walk away. It would be especially nice on a sail boat as you wouldn't have to keep gas on board and wouldn't have any gas smell form the engine. Once you disconnect the tank, the motor can be stored anywhere. As far as power goes, we see about a 20% decrease in power verses gasoline on the same motor, but we can make up for some of it by running higher compression(up to 13:1 with pane). i couldn't give you any comparisons on mileage, but we generally burn up 1 full fork lift tank in an average day of wheeling, I guess you could compare that to about 15 gallons of gas
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