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      06-27-2016, 02:50 PM   #29
mrquick68
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Drives: 2013 Audi S4/2015 X5 35d M
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I will say this sounds like total and under BS. Diesel fuel has always been known to be dirtier than gasoline. No worries, that's why the factories install Heavy Duty fuel filters as part of the factory design. There is NO way for dirt and metal filings to get by the filter. The fitler can clog, thus causing lack in power, but that's about it. The only way anything could get by the filter is if it were smaller than 2 microns, in which case it wouldn't be metal. So, algea is possible or something else. Again, it could damage the injectors if it made it through, BUT algea can only grow if its in water. and the fuel system should have a water/fuel separator. All the light duty diesel pickups have them, so i'd think BMWs should too.
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