I picked my 2012 up and the service manager said no break in required, they sell to hot shot services all the time and they hook up and go. I drove it around a couple of hundred miles, just because I was not ready to go camping before then, but ran it hard. When I did put my 9500# TT behind it, I ran it hard again. That was 47000 miles ago and no problems anywhere. Had the trannny and rear end serviced at 25000 and the mechanic said no shavings and probably didn't need servicing. IMHO, dog it. Run it hard, but vary highway speed.
