WVO has large amounts of things bug love -- nitrogen (protein), phosphours, and edible oils. It's not a solvent, but if you have anything living in the tank, it's gonna bloom and make a mess.

Biodiesel is less trouble in the long run, I think.
Once I get the garage cleaned out, I'm gonna make some!

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!