Friend at the gym added a 100 gallon fuel tank to the bed of his truck. It is the kind with a fuel nozzle and pump. It is not connected to his truck fuel tank and can be used to fill loaders and other off road equipment. I told him not to do it but he filled it up with off road diesel and has been using it to fill the tank in his truck. I think he has a target on him riding around with that nozzle on the top of the aux tank and he also delivers boat on occasion to different parts of the country. What will the fine be if they stop him and find the off road diesel in is CTD's tank? What are the chances he will be stopped?