I have a 2007 Magnum R/T with a 5.7. I has 180,000 miles.
At 100,000 I had the transmission and the cooling system serviced.
I also replaced the spark plugs at 100,000.
I have replaced the batteries every five years or so.
Fairly recently I had the serpentine drive belt and hoses replaced.
I change the oil and filter every 10,000 miles normally with Mobil 1.
It still seems to be going strong.
I don't drive it now near as much as I used to and I will probably go to annual oil changes without regard to the mileage.