New to the forum but have one big question. I have a 2012 Dodge 2500 now and am thinking about trading it for a 2011 crew cab Duramax and wanted to know what everyone's opinion was. Also I read where the 2011's had DEF and alot of people was haveing trouble with it saying they were out and only running 55 mph. I really like the trucks just never had one so thought I would ask you all. Thanks