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525 tds leak off pipes.
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  1. 5 Series
    Hi I replaced a few of the diesel leak off pipes and noticed the mpg meters digital/gauge are not in sync. The digital seems to be reading 10-15 mpg off what it usually is 40-45 is now 29-34 country roads, town is down to 19-20 from 30-34. Is there anything I need to bleed or process you must do...
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