I have a little over 42000 miles on my 2015 Eco diesel and believe I lost the motor last week.  It has been at the dealer since Wednesday March 23rd and I still have no confirmation of what happened.  I think the failure was a main bearing, but since they have to talk with Chrysler every step of the way it sounds like it might be at least 3 to 4 weeks before I get it back.   I was in cruse control and started losing power, all gauges were normal.  I started smelling oil and hearing a rattle in the motor.  Then continued power loss with the oil pressure instantly falling to nothing.  I was unable to shut it off because it had to be in park with the push button ignition, so by the time I got to the side of the freeway it was rattling somethings awful.  I really liked the truck, but I have serious reservations now.  I had to buy another truck so I can work.  Sure glad I bought extended warranty, Chrysler is in no hurry.  Has anyone heard of engine failures becoming a problem?