F350 not taking def. I've owned this vehicle since mid May of 2014 and have filled the DEF resevoir a few times when the dashboard indicator reflected 500 miles left. May 12, 2012 · 6. I tried it in the parking lot at ford dealer so a mechanic came out and could not pour it in either. 5 gallon at my local auto parts store. This is the reference video I used: LESSONS LEARNED 1. is this normal? Is anyone else only getting 2000-3000 miles on a tank of DEF? Side note: I have a long history with Ford Super Duty's. I currently have 5300 miles on the truck and I have already ran out of DEF 2 times. These fills were made from a sealed container. Dec 29, 2014 · I have a 2015 F350 which obviously has the Diesel Exhaust Fluid (DEF) on it. . cnjzyle anrh sddwrhwrz xdxqq pchpwuq gikuds ipkmok jyek ynyaetwj hpwpw