I was checking some video's on Youtube and found several on this generator, the author had indicated he was running premium fuel in it... "?!"
Sure enough manufacturer says premium fuel.
So now I am running a 1 gallon test with premium fuel... about an hour 15 into it right now.
Checked the exhaust temperature, you'll notice up above on the regular fuel it was 363F,
with the premium fuel the exhaust temperature is as high as 410F, current temperature of approx. 403F.
Made sure I checked it from the same angle as the previous run...
Regardless of these test results, I'm going back to regular fuel!
Back with more later. ( might be a 2 day event, don't want to annoy the neighbors too much.)
Karl Fortner
Tacoma, Washington