how to tell if vehicle broken in properly

Meh.... unless they did 50 hot laps at Daytona after just leaving the dealership I just would not worry about it.
Sounds like a nearly ideal break-in to me if the engine survived.

It’s far more likely to have problems from babying a new engine than from being aggressive with it as long as you let it warm up before giving it the coal.
 
Back
Top Bottom