You guys running wvo or thinking about might want to investigate the use of a centrifuge to filter and dewater your oil; no messy straining and filtering and when done correctly you'll find your onboard fuel filters stay clean for a ridiculously long time as a centrifuge will filter smaller then any fuel filter, down to .5 microns, could ever catch.
I won't attempt to explain it all here but it you take a look at
http://biodiesel.infopop.cc/eve/foru...1/m/2001011761
or
http://biodiesel.infopop.cc/eve/foru...1/m/7911094591
you'll find plenty of information on the subject.