something else at play here. white smoke because of temps is one thing but blue smoke and then such a long regen is another.
Check your oil and your coolant levels carefully.
This to me sounds like an overfueling condition.
Is the truck running rough or misfiring? They need to pressure test the fueling system. I think you have a stuck injector or something myself.
Truck runs fine and has normal power. No blue smoke since this morning.
46 miles total on the REGEN now, and it's still not done. I had a 20ish mile stint where it first went into REGEN, and several 8-10 mile trips where it kicked in and stayed till I shut off. I just haven't had a chance to plant my butt in it and drive 30 miles to nowhere to see if the regen will end on it's own.
It is SUCKING fuel though, for sure.............1/4 tank indicated over the last 45ish miles......I zero'd out my MPG on the way home from work...........at 55mph, in REGEN, I am getting a whopping 8 mpg. This IS with a 8.5' Western V-Plow on the front (in full Vee mode, least wind resitance), in 2wd. From memory, the truck used to get 13mpg at the same speed when not in REGEN.......... I'll tell ya now, I get better mileage than this when towing my travel trailer
I'm wondering if it's got a bad injector...........sucking extra fuel,......but why the BLUE smoke? Fuel would be BLACK smoke, right? Blue would be oil..........could it be a bad EGR? (replaced with the new style, no coolant line to the degas bottle at 75k).......
Dealer blew me off, I might call and tell them it's stuck in REGEN mode, this will get expensive quickly as the DPF, EGR valve are not under my warranty (EGR cooler and injectors are)