Know nothing about wvo, but have run lots of Bio B99 through my 99. It likes it, but mpg does suffer ~10% making it a poor economical choice as it costs more than dino currently.
I think your 96 uses viton parts?
review the "sticky" on the diesel page, that should be discussed there.
http://www.peachparts.com/shopforum/showthread.php?t=111689