Every morning I start my car, everything seems fine. As the temp needle starts to climb I hear a squeeling noise coming from the passenger side of the car. When gently reving the engine the pitch of the sound does not change. It stays constant. When the temp needle raises to normal the sound disapears in 1 second. I'm not overheating no problems. I did spray some belt dressing on the belts. The sound did not go away. I called a volvo speed shop they told me not to worry about it because it's the age of the car. Any ideas??