Originally Posted by DieselDiner
MSM, thank you for relaying your experience - this should be a cautionary tale for all of us. Did the truck have a DEF system? I'm wondering if the action of the DEF in our cars would tend to diminish the sooting you described in the turbo.
It does not, however this issue occurred upstream of where any DEF system would be. I would be even more cautious with these sequential turbos then the big single on the Ford.
I am going to leave my X5d stock