Just left the dealership....

[DKenworth]

Also i think issue is poor diesel quality and BIODIESEL which make regen very often. Check before you get fuel how much Bio blend in fuel because, best is B5 blend or. ulsd. One of my buddys got fuel (B20) at Loves in Florida on I-75. and right after that evening all lights went up on dash, truck was loosong power and couldnt do regen for 3+ hours and mpg went down to 4-5. He was about to go to Peterbuilt dealer... after a day he got fuel in Tennesse state everything is gone, truck back to normal, regen was done in 30 min. So, watch what u put in your tanks.