I now have 87000 on the 07 dodge , with no problems, I do not drive it as a grocery getter,only driven on long trips with the airstream, this engine will have have problems if used around town and as a grocery getter..it does very well for what it was purchased for, just like my big truck with a 500 hp cat with 1.35 million miles and the head has never been off, no around town or idling ,the KW cab is alumium and fiberglass, held together with rivets .......still tight.