Hey Gang I have a question for the forum, I have 328i f30 and right now she sounds like a diesel engine, I have taken her to two different bmw dealerships here in Germany and they keep saying that it is normal wich I am not buying , usually the things that make 4 bangers sound like this are 1) being low on engine oil which I checked ,, double checked and triple checked , using cheap gas .. which I only use 93 so what else could make it sound like this , this is becoming increasingly frustrating
