Every engine/car is different. Mine which has a new engine has a noisy drivetrain, and is noisier when cold. I can stay off boost, stay below 4000 rpm, stay below 35mpd; and in cold weather have a knock reading of 40+. Just shifting gears at 100mph+ , I can have a reading 120+.
If a stay in 4th and make a run from 2500 to 7500, it might not go over 35 until I shift. My car is almost 10 years old and has been a dayly driver all this time with almost 90,000 miles. Except for the engine, the drivetrain is original. Same for all axles and bearings.
Why do people let 20 years of Nazi abuse of this over 6000 year old positive religious symbol still control their emotions. Time to restore it to full glory as it has been and still is in the East.