Had to have upper rear right control arm replaced on my 2011 Town car that only has 15,000+ original miles. I started getting a squeaking sound from the suspension as I went over certain bumps. You could only hear it with windows down in the nice weather we had here last week, with radio on low or no volume. Rubber bushing went bad in the arm. Mechanic showed me at the local shop I use. Rubber piece should be sitting at the top, not sunk down. All the other suspension pieces look great as should be expected with the low miles. He thinks it was a freak thing that might have been slightly defective since 2011 and only started squeaking because rubber bushing shifted/defective. It looked fine, not deteriorated, but definitely shifted in the arm. Fine now. $180. Dealership wanted $400+ no thanks. he used MOOG brand.