The life of a Magnum (and 46RE question)

2000 Dakota R/T.

160,000 and still runs like it did when I got it with 30,000 :)

I'd say average driving with occasional bouts of "extreme service" including cross state hauling and towing and foot to the floor episodes.

Valvoline syn blend oil change every appx 5000 miles.

Occasionally need to add 1/2 quart before 5K.

Trans has never had issues (I've heard the R/T trans is lees likely to have issues) other than a cold condition late 1/2 and sometimes 2/3 shift until warm.
Only on sub 50* mornings.

I'd not think twice about dropping a 150K plus magnum in a street car and driving the wheels off it.