This is why I perform my own oil changes. This way I am sure of what oil I use, (Ford Specs full synthetic), and I know the job was done correctly.
The reward is it is way cheaper, (average $42.00 for 6qts. Ford spec'd full synthetic, Motorcraft oil filter).
I use a 12v oil extractor pump, ($20.00 on Amazon), that gets 99% of the oil out, with absolutely no mess, change the filter and I'm done.
I can't speak for other dealerships, but my local ones are hit and miss, depending on who works on your vehicle. My encounter was the tech did not perform the simple task of replacing the cooling system cap correctly, after a system flush, causing all my fluid to spill out on the highway. I was stranded and had to get it towed to the dealership. Luckily, I caught it before it caused serious problems. You would not have gone through the anxiety of thinking you had an issue if the service tech did his job right.