LOL, sometimes you have to laugh at these stealerships and their stupidity. The fact they would even say that is somewhat amusing. They think everyone they work for doesn't know how to turn a wrench. What vehicle was this nonsense for? Ah just saw the 08 mountaineer, yep you summed it up. I think you are better off finding a good shop, my shop can service my ford better than ford can I'd bet. I fix mine myself for the most part and but occasionally use the shop as well. I use Motorcraft parts and supply the Shop with said parts of I want a certain part to be used and they are normally good about it. You have to watch these dealers with a close eye just like any mechanic.
You are just like me...I could have wrote that. LOL