I did a fuel test on mine today & filmed it but am having computer problems and can't upload it, I couldn't get the engine to run on white gas (coleman style)...but ran great on lighter fluid (Zippo type) and it hardly stunk. I ran the engine for over an hour (3 tanks of fuel) & Ang didn't even smell it...the engine runs very cool also, my thermo electronic temperature pointer never registered over 116 degrees .
got the computer working, here's a vid