My Explorer’s brakes have been swueaking since about 8000 miles. Sometimes when the brakes are applied at low speeds (5-15 mph) they sound like wood on metal, as if the brake pads are made of wood. Other times they squeak loudly like metal on metal. I have been to the dealer and no resolutions. Engine also sqeaks as if bearings are going out only when started for the first 5 minutes of running wether it is hot or cold or humid.