After owning my 2015 6.7L F-250 for 5 years, I made a big mistake just now. I got distracted and put a gallon of DEF in my fuel tank. Fortunately, I realized my mistake before I cranked the truck. It is sitting in my garage and I am about to drain the tank. Is draining the tank sufficient? Is it necessary to drop the tank and clean it out? Do I have to to replace the line between the tank and the filter? Do I have to replace the tank itself?? I've seen such a wide variety of opinions on the web I am overwhelmed and kinda lost... I came here in hopes that some of you might share your wisdom and experience. Thanks in advance.