I have a 1984 300CD in which I have been running B100 for over a year and a half. This summer I was out of town and not driving the 300 CD now I am having a problem with clogged fuel filters.
I took the line off to the prefilter and pressurized the fuel tank getting about 3 gallons out that had small black balls in it. I replaced both fuel filters and noticed today a week later that the primary filter is clogging again.
Has anyone else on Bio-diesel had this problem and what did you do?

Thanks for the help!

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Moss Gate Bed & Breakfast
1985 300 TD GG done in by a red light runner
1984 300 CD Sold
2008 Titian
2000 Cadillac SLS
1966 FLH Sold
2003 Harley Ultra