OK, a few things...You will want to get fairly clean oil to start withif it's available. You will need to set it in a big container where it can settle exposed to teh sun and dark is a big help. After that, I would suggest filtering to 10 microns or finer. I have a drum cheapo from Northern Tool mated to a NAPA filer/water sep for my biodiesel. Additionally, add an inline filter between your tanks and main filter. Also be aware, this oil may still contain too much acid adn finally eat your injectors or pump, some people say that these rotary pumps can't handle WVO at least at 100%, I personally don't know, I got frustrated after plugging a bunch of filters and perfected homebrewing of biodiesel. Not saying don't do it, just warning you of some potential pitfalls, the keys to success are filtration water seapration, and heat. If you run WVO on a hot fuel system in the summer when it flows well,if it is clean and dry and not overly acidic, I bet you will have no problems....but I wouldn't guarantee it. There are conversions ystems available. Good luck,
J.D.