This isn’t Cathy but—I went to work right out of hi-school in a small refinery in Kansas back in '51. I worked for awhile in the “bulk loading” area. We sold “tractor fuel” which was no more than unleaded gasoline that the state said had to be dyed green. And “drip gas”, have burned a lot of it in a Model A. If you put a quart of diesel to 5 gallonof drip it would smooth it right out.