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      09-23-2010, 04:51 PM   #6
Chriztofor's Avatar

Drives: '06 325i and '13 X5
Join Date: Feb 2010
Location: Chicago Burbs

iTrader: (1)

Originally Posted by hkyplaynazn View Post
Pretty much all gasolines from the major manufacturers will have additives (cleaners, detergents) to keep the fuel system clean. If you continuously use fuels from the major gasoline manufacturers than utilizing a fuel cleaner additive will yield little to no results (unless you convince yourself that you can "feel" the difference because you've spend the money)

Also, a lot of these additives target cleaning the injectors and the valves. If you have a DI car there will be even less returns since the fuel will never come in contact with the top of your valves in the first place.
I disagree.
If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger