I had a dual fuel two burner back in the early 90s. I made the mistake of running cheap unleaded gas in it once3 and had to field strip the generator and clean all the carbon off it with my leatherman. I got it cleaned and borrowed a tank of white gas and didn't have another problem until the check valve on the tank pump went away. It still worked, but you had to keep your finger over the hole until you screwed the pump stem back shut or it would bleed pressure out of the tank.

The liquid fuel stoves get a lot hotter than the propoane ones, which is better for me.