Re: DIY - discussion on building a DIY hookah diving compressor
Propane makes sense as a motor fuel when you need a clean burn, i.e .when the motor will be used once every six months and then put away,and you don't want to clean it out, pickle it, worry about varnish and gums forming in the fuel.
But if you're going to use the motor more frequently, propane also has the lowest energy density and will be the most expensive fuel you can burn. Propane for the air compressor? Sounds like a waste of time and money if you are going to use that compressor regularly, i.e. once a month or more often to clean the bottom.
Of course if you have propane and diesel onboard, it still may make more sense than going out for gasoline. Damned hard to find SMALL diesel-powered anythings.