Honestly, I wouldn't accept it as an answer. After my initial response here, and the service appointment to replace the turbo, the issue came back a week later. Their response was to replace the turbo again. That was about a month ago by now, and the issue has not returned. They said on the next attempt, Ford was going to send out a technician and possibly see about a redesign. So I would pressure them about this issue. Ford definitely knows, and is definitely willing to replace a turbo once or twice.I found this thread while sitting at home waiting for the dealership to figure out this noise...(why didn't I Google it before? ) They basically said the same thing and there's nothing they can do.
I did jokingly ask if I could get a discount on a Borla exhaust system to "fix" the sound and the service tech said he could do that.
So maybe that's my solution
Problem is, that's an exhaust, so it's extremely hot. Grease would probably just burn up and create a bad odor.It's definitely annoying they didn't do anything about it. Even if nothing is "wrong", it seems a small dab of grease could help it. Might do that myself, just not sure what would be best to use so it doesn't inadvertently collect dust and get gummed up.