PeachParts Mercedes-Benz Forum - View Single Post - I can't believe how much of a difference a clean fuel filter makes

lrg · #7 07-17-2003, 03:52 PM

Obviously there is a type of algae that loves diesel (and just like us doesn't like gasoline), it just needs a little water to make it grow. Who knows, it may be related to the stuff the oil recovery teams use to eat up oil spills from tankers. Fortunately, this algae doesn't grow very rapidly so if you are using up the fuel relatively quickly you should't have a problem. If you tend to let the car sit then that's another story. Buying fuel from high volume stations helps cut the risk too. If you plan on storing the car for more than a couple of weeks I'd recommend a dose of Bio Gard and filling the tank just to be on the safe side. A lot of diesel additives have a biocide that will keep algae at bay but usually aren't strong enough to get rid of it if you have a bad case.