My examples are not HEMI engines but I think they are good examples of the modern tech doing what they should be doing. Delivering!

My '03 quad cab 4X4 Dakota V6 has 220,000 mile plus and uses less than half a quart of oil between the oil changes. Still gets 19/20 Hwy.
The wife's '99 Durango has more mileage. Does use a little more oil than mine does though.
No leaks on ether engine. They run like an old sewing machine. Solid as a rock. Modern engine with high miles really do not scare me. Prior maintainence or lack there off is the pit fall.