I always check oil level and torque my lugs after a dealer oil change and tire rotation. I do it right in the service lane when they bring my truck back up front. Service writer was like "what, you don't trust us?". It's not that I don't trust you, I don't trust anyone. I'm not driving 20-30 minutes home on low or over filled oil, or loose lug nuts, because the greenhorn tech messed up. Then I get to argue with them about it after the fact. Nope. Been there, done that. I also get to do a visual inspection of the engine bay because one time the jamokes dumped oil all over the place and half-assedly cleaned it up. Come on, man. Take that sheeeit back to detail, throw some degreaser on it and hose it off.