I also ran 2 in the past (Alamos) on gas. I ran them on 6.5 HP Hondas at about 1/3 throttle. They did well. I'm running one this year on a 9 HP Honda but it will be Saturday before I figure out the throttle %. I am setting that up with a 9 gal fuel tank. In the past with that pump I only had 4.5 gal and that last 14 hrs on a 6.5 HP Honda
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.