OUCH!Here's one for the books. We flip all of our fleet of trucks annually for our foremen and this year we went with 2020 Ford F-250 diesels that we just took delivery of them in March. One of our foremen needed to add DEF to his and accidentally put 2.5 gallons of DEF in the fuel tank. He drove it about 200 yards before it shutdown as the fuel gel'd up. Had to have it towed off site to the dealership to have it looked at and the bill came out to $8040 to drop the tank, replace all lines, pumps, etc. The truck had only 4200+- miles on it and the foreman confessed he just F'd up and put it in the wrong filler which is clearly marked with blue or green filler caps. The only saving grace to his story was that he was working the late shift of a 72 hour factory shutdown and did this at 3:30 am.