When I went to loosen the drain plug it was VERY loose. Guesstimating but I bet it took a couple ft-lbs to break it loose. To further the mystery there was no crush washer, and no it wasn't stuck to the pan. We bought the car new with like 10 miles on it. I guess it is possible that the factory f'd up and left the washer out and "maybe" that is why it was so easy to break loose (i.e. no friction from a crush washer). Mechanical engineer here and I'm baffled. Luckily that plug stayed in.
The oil and filter looked great so that was a relief from the break-in perspective.
Lesson learned, if you need to purchase a large socket for the filter cap it would be preferable that it isn't aluminum like the one I bought (i.e. not magnetic). It came off the socket extension and disappeared into the depths of the engine compartment. I could see it but no magnet solution....arrgghhh. I was able to reach it with one of those flexible grabber claws.
Nice not having to remove a cover like I do on our GLC300 to get to the drain plug.