It peaked at -10. The dealer changed the fuel filter and let it warm up overnight in their shop and that seemed to do the trick. I asked if there was anything more that I could do to prevent it from happening again and the response was park it in a garage, which my truck won't fit into.
Gelled up the filter and/or lines. I recommend to double up doseage every time you fuel up with a anti-gel. Don't know where you are at, but if it's the south, I bet you don't have winter fuel. #2 diesel will start cystallizing around 20°. #1 is a lower temp, but doesn't produce as much power.Now she won't shift out of third gear without the engine shutting completely off and I am getting the reduced engine power service ESC message. Limped it to the dealership and the guy at service told me the fuel was probably gelled which I though was interesting considering I have been using additive when I fill up and I dumped half a bottle of 911 in it and ran it for two hours before taking it to the dealership. So I guess we will see what happens. Couldn't provide me a loaner or a shuttle so I had to hoof it back to the house in -8 degree weather also which is pretty disappointing considering I bought the truck new in July of 2020 and it currently only had 11k miles on it.