I own two 2007 Taurus; one squeaks and one does not. The squeaking comes and goes; it seems worse when the outside temp is warm and is much less or gone when it is cold. It has been going for more than two years now in spite of new water pump, new pulleys and new belts (2 or 3). Tried WD40 on it seemed to make it worse. It sure is a pain in the butt. If anyone ever finds a sure cure, please post it because many of us want it to go away.