Best Fuel Injector cleaner - BMW 3-Series (E90 E92) Forum
Where should I spray the cleaner to clean the intake valves while the engine is running? Car: (BMW N13 Engine), Cleaner: (Liqui Moly Pro-Line Throttle Valve Cleaner) : r/BMW
Genuine BMW Fuel System Cleaner Plus Additive - 3.38oz - 83195A07750