Hello, I found an article about the loud V-belts on the Audi 80 B4. There they wrote that one should spray “third hand” on it. Unfortunately, I have not yet found any explanation what that is. I renewed the 3 belts last year. But whenever it gets cold, the belts become very loud and only when much has been driven the quieter. Do you have a solution, perhaps with the “third hand”. Greeting Volker