I replaced the CAF in my daughter's 2013 Edge this summer. I don't think it had ever been changed before. It was nasty, but I've since seen pictures of much nastier ones on here.My CAF in my daily is I have no Idea how old, its been in the car since I got in early '21, (2017, got it with 30k miles), its real a pain in the ***** to get to it.