The Britelyt folks have a pdf of all the fuels that are approved and tested. Mix motor oil 50/50 with a volatile like mineral spirits or gasoline, pour it in, pre-heat, and fire it off. You'll spend days cleaning and rebuilding one if you use used motor oil. There's a big difference between "you can" and "you should". Like "you can" run one on straight diesel, but "you should" cut the diesel with 10 - 15% gasoline for best results and minimum problems. "You can" run one on everclear / moonshine, but "you should" run it on old scrap gasoline and drink the moonshine.
This is the answer I expected from you , because it makes sense and is well reasoned ! The first statement that the lamp will run on oil had me laughing.
I wouldn't want my lamp burning like a Kuwaiti oil field. Thanks man.
