I think I mentioned it before, regular gas will work fine for a while. It WILL eventually clog the generator. How long does it take? I can't say exactly, a few hours at least (10-30?) It will also clog the Dual Fuel lanterns eventually but will probably take longer. I don't own a Dual Fuel lantern, I'm just repeating what I have learned from the Coleman Collectors.As a teenager & in my early 20's, I ran regular gas in non dual fuel Coleman lanterns. YMMV, I never had a bomb & they worked flawlessly.