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Hey Drew, I've tried driving it hard with lots of PS/MMO, but the noise is still there (no problem according to the stealership), problem is there aren't too many steep hills here in southern Texas, and I don't tow any significant weight very often, in order to get the pressures up................do you recommend any injector cleaners ?
just keep an ear out and if you notice it getting louder then worry about it. I wouldnt worry about injector cleaner. the PS acts like one with the higher cetane value.