I am the proud owner of a 2011 Ram 2500 Pick-up with 6.7 Cummins engine with 6 speed AT. I have 85,000 miles on it. The "Required Service " came up on the dash panel. The Dodge dealer looked at it and said I needed to have the Exhaust Regeneration System serviced. He said this normally occurs at 75,000 miles but mine did not show up until now. He also told me that I would have to have the system checked which would take about 4 hours and cost $650. He said not to worry about it that I could drive it for another 10,000 miles if I wanted to. My question is " What should I do?" I talked to another owner who has twice the mileage and he has never had anything done to his. Thanks, John