Had Any Problems With 2012 Ram 3500 HO Crew Diesel DRW

Hello, Just about to buy demo 2012 Ram 3500 Crew Laramie Diesel HO DRW Longbed 4.1 with 4,000 miles. Previously had 2001 Ford F250 lb sc diesel 7.3 sold, the current below, now want DRW. ...