I used to work at a gas station and I would put diesel in gas tanks and gas in diesel tanks.
How could you do something like that to people?! Didn't that break things? Did you ever get caught?
I did get in trouble, but I never got charged for this
You should consider yourself lucky. It is not okay to use the wrong fuel in engines.
Well first of all it didn't break anything and also it was obvious that the car owner was stupid for this so I was going to charge them more.
You could have really did some damage to other people cars. You can't go around putting the wrong fuel in cars or it will destroy the engines.