Had a lady come in last week with a 2012 ford focus towed in. asking Why it stopped running, said she put in diesel because she heard you get more power if you use diesel....
I used to work at a GM dealership in West Texas (Odessa to be exact) and you wouldn't believe the number of oil field diesel trucks that came in because they filled up with gas......still couldn't figure out why or how they did it. Oh well, free gas for whoever was working on it.