Originally Posted by TheRuss
Great, thanks for the advice. Is the fuel system cleaner really worth it? I thought all these fuel additives just did more harm than good? Will look into re-gapping the plugs, as it's not something I currently have any knowledge of. Can it be done once they've been used for a short while?
If nothing else, I'd just check them..it's not hard but you will need a special BMW socket. And yes, using them for a short while has no bearing on that. Long term, yes as the electrodes will shrink and gap even further. This is why it's recommended that they are changed more often with a tuned car.
This wasn't so much an additive as a cleaner. I didn't want it in my tank for an extended period of time, so after talking to a german car specialist..this was how I chose to do the cleaning. A good douching and done with it