Actually those old girls did not exactly use kerosene. They used something called "distillate" which as I understand, was in that zone around the kero/ diesel area of the refinery. I've always figured it was a bit lighter than kero. We had a '28 Farmall "Regular" that was designed for that stuff. We always just used gasoline. For a short time Dad had an old Case he resurrected that used the same deal, and My Gramps had a Lindeman Deere crawler that was set up that way