[MoparMarty]

Originally Posted by 08ChallengerDad

Besides personal experience with my own vehicles, my line of work involves using, servicing and repairing ALL kinds of engines; diesels, gas, compressed natural gas, naturally aspirated, forced induction, carbureted, and fuel injected.

Everything I've ever heard and read regarding ALL new engine break-ins is similar:
Let it warm up - in warm weather, 45 seconds, and in cold weather, 2 minutes. This is for proper pressure and circulation of the oil (without unnecessary wasting of fuel).
AVOID constant RPMs for the first 500 miles. Vary speed and RPMs as much as possible - city driving with traffic lights and constant acceleration and deceleration is optimal for break in.
Break it in the way you want it to run. Self explanitory.
Change the oil and filter @ 1000 miles & every 3000 miles/3 months thereafter.

I've followed these basic "suggestions" for 30 years and have never had ANY engine problems with any of the vehicles I've owned or used.

AMEN!!

I may not be a pro, but I've broken in several motors over the last 30+ years - EXACTLY this way. I'll be breaking in my 340 'Cuda this way when I get it back on the road this summer, and (hopefully) my Challenger when it gets to my garage. Constant RPMs are evil. Freeway cruising at a steady speed is bad. Other than that, drive it the way you plan on driving it in the future. If you're going to jump on it, jump on it! You'll know really quick if they put everything together correctly. Just get that 1000 mi oil change done.