While checking my see-through fuel filter on the 240D I saw black granules inside. Took it off and shook some out. They were hard, not soft like I expected algae to be. Is it algae or could it be deteriorating fuel lines? I am the fourth owner of a low mileage car. It could have been sitting around in its earlier life. I have used PS Diesel Kleen but I haven't changed many hoses other than the injector loops.

After reading ten pages of posts on a search I don't think I'll have trouble sleeping tonight.

__________________
Rick
Avid Benz watcher

Previously owned 126's: 2 1981 300SD's, 1987 300SDL, 1991 350SDL,
Previously owned 123's: 1978 300D, 1983 240D, 1985 300D
Previously owned 124: 1994 320TE

Currently:
2004 Toyota Sequoia SR5 206k
2010 Ford Edge 122k
Always looking for the next MB diesel!