u/Advanced-Cap-8286

I have an 2009 335I N54 and was wondering what liqui molly oil would be the best because I’ve seen that there’s some named Molly gen and some not. Previous owner put nothing but liqui molly but when I took my car to a mechanic to change the oil they claimed to put liquid Molly but the engine just sounds different and a lot louder so I’m just gonna do it myself this time but wondering what oil I need,

I have an 2009 335I N54 and was wondering what liqui molly oil would be the best because I’ve seen that there’s some named Molly gen and some not. Previous owner put nothing but liqui molly but when I took my car to a mechanic to change the oil they claimed to put liquid Molly but the engine just sounds different and a lot louder so I’m just gonna do it myself this time but wondering what oil I need,