Originally Posted by mAdTYzz
One suggestion here, i dunno for BMW but i managed to shut up the lifters on a vw passat by adding some sorts of additive to the oil, some whatever from my local car parts shop. To change the lifters you have to take off the cam axles which involves taking the timing chain off. IMO it's not really a thing i'd try allthough i work as a mechanic. BMW looks so freakin complex :<
Agree. After regular oil change, the noise seems to disappeared. I didn't add anything to the oil tho.