I finally changed my fuel filter (v10 - gas) for the first time. I don't know if/when it was changed previous to me owning the van, I put ~ 15k on it.
This is the residue from draining the filter into a previously clean (slightly greasy) oil drain pan:
Silt, metal shavings and a couple small rocks (large sand grains really). Yikes! Good to know the filter was doing it's job.
I cut up the old filter, and it's pretty brown and waxy.
The combination of the places I take this thing, and the fact that it gets 12 mpg at best, means that I've gotten fuel all sorts of places that I might have skipped with other cars. I'll do another change in 12 months / 5k miles and will see how bad that looks.
I have not driven the van yet (and may not for a couple of days), but it did fire up on the second try (re-priming obviously) and it seems to be running fine. No codes or any unhappy signs due to the momentary lack of fuel pressure.