I have 170xxx miles on this truck, as far as I know it is all stock, I bought it with 164xxx miles on it in November 2012. 3,000 miles ago I changed all filters, (oil, fuel, air, & crankcase filter in valve cover) filled with Rotella and drove. I have added 1 gallon of oil since the oil change. No noticable leaks, turbo is dry on both sides....no hard start or run issues. It does "black" smoke on acceleration. Any ideas on what I should check?

 

*mods*
Posted in wrong section....please move.

Sorry.