OZ wrote: "A couple of 5-gallon totes of $2/gallon mogas in my hangar could bring those differences in value to the immediate forefront if they were to spill and ignite."
That comment puts a whole new light on the problem! Fortunately (I think), the only hangar near my hangar is my OTHER hangar! Before I got the Swift, I rented my second one to a guy with a Cessna 210. He told me one day that he'd lost 19 gallons of 100LL out of the wing tank and onto the floor of the hangar about a week earlier. Apparently his petcock failed somehow and drained one wing tank. I went in to check on things and there was no trace of the fuel...no smell...nothing! So there's something else to worry about. If the air compressor had cycled while all those fumes were in the building, it could have been more than "just" a big fire! I leave the air compressor off now... But that's another good thing about 100LL...it's clean, evaporates with almost no residue, and doesn't stink like autofuel. Mark Langford, Harvest, AL ML at N56ML.com www.N56ML.com