Quote:
Originally Posted by dradernh
If you get two bottles of BMW's fuel system cleaner and put them in back-to-back empty fuel tanks, you'll speed up whatever effect you're going to experience from moving to Top Tier gasoline, and it might speed up how soon you see a difference
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Yes, our Subaru starting making some noises going uphill after a few months of grocery chain gas. It took a couple of months of better gas before it went away. I think once the deposits are really built up, it is going to take more and just rinsing it with new gas is not going to really work.