hello last night i was at a 1/8th a tank and went to gas station, filled tank up all the way when i noticed i had put gas instead of diesel. i was only 3/4 a mile from home so i eased home no problem running fine, i realize i shouldnt have moved at all. so what am i looking at??? dropping tank and changing filter or does it need to be towed to dealership.??? all help is appreciated.