Michael,

There is NO WAY that you should expect the fuel filters to normally
last  less than 1000 miles..  Normally speaking, mine lasted 30k (maybe
longer, I had owned the van for 30k when it was replaced).  Have about
20k on the new one.  (don't really know if this is too much or not, I am
the one with the fuel leak currently so ...  needless to say, it's
parked until I can get it fixed :)

If I were you, I'd also be seriously concerned about the fuel pump.
IMHO, the fuel tank needs to be cleaned out before any further damage is
done.

Tonya
87 Vanagon GL Wolfs
74 S. beetle