Purchased the vehicle 2nd week of july 08 from local truck dealer center. The 1st week of august at 500 miles the engine light came on. Dealership said it fired eng.code stating O2 sensors are bad. They replace the O2 sensor. 200 miles later the engine light came back on, Dealer states eng. code says O2 sensors bad. Replaced O2 sensors again and wrapped exhaust. 300miles later the engine lite came back on, dealer says eng. code says O2 sensors again / soot in turbo. They Replaced O2 sensors 3rd time - cleaned turbo(desooted). 280 mile later O2 sensors back on, Dealer replaced O2 wire loom, O2 sensors and egr valve. Today ...400miles later I experienced an extreme loss of power ..... the eng. light comes back on, codes are ... turbo and O2 sensors are bad. I called a Chrysler executive who claims a new turbo is on order and on the way, and that they expected my call and apologized for all of my inconvenience. (Ram 2500 SLT 6.7L 2010y,67k miles, modified)