Hi JM, I think that unleaded will eventually clog the generator if you are using it long term as these people are. Using a few drops of injector cleaner in each tank helps.
So distilling the petrol gets around this and the “clean ” fuel probably lasts /stores better too. Dave claims it runs better. . I suspect using old gas would be very bad for stoves and lanterns. If you read all the comments on the article you find all sorts of experience being related.. including the use of diesel and kerosene, and mixes. All useful after a SHTF scenario.
Selco related someone in his city tapped a pine tree for turpentine.. for lamp fuel. That’s really back to basics.. but there are lots of pine trees where I live.