I am not sure of this but it seems to me the engine has been more buzzy/louder since my first service at 10,000 miles. I have no measurements of sound just a general subtle sense that the engine sound seems somehow more noticeable than before. I have checked the oil level and all seems well. Is it possible that anything can be done during the oil & filter change/tire rotation/fluids check that would increase the engine sound? It is not enough for me say anything to the dealer and not expect that “are you crazy?” look.