My 85 SDL stalled out about a block from the house.

Restarted though about 5 min later.

In the thirty seconds it took to get home, I was thinking, "it's got to be fuel."

Popped the hood and looked at the prefilter.

It's former cone shaped pleated glory had changed into a black felt gnome's hat. Complete with jauny curl at the top.

Two months after a single tank of B20 on a prefilter that was only a month or two old at that point.

A month later the new new prefilter is looking a bit nasty. I wonder if the new ULSD has some of the cleaning power that the Biodiesel has?

So, yeah you can have a "spontanous" filter failure.

__________________
Dan

86 300 SDL
New odometer gears, new rubber fuel lines, removed and plated EGR, redone underhood vacuum system, BoostValve on the turbo, IPod only sound system, changed a couple of window motors, refinished the console wood, changed a couple of switches, removed welded and replaced my oilpan after I cracked it (driving like an idiot), new glowplugs, new/used glowplug relay, sunroof repaired, antique brass boost gauge on the hood.