right petrol diesel contains very small amounts of water that can basically be "filtered" out. WVO can contain a significant mass of water that has to taken out be by evaporation, separation or vacuum. not to mention chucks of fries and mcnuggets, but filtering is not too hard

Im not knocking it, if I didn't have a bike that got like good milage I would probably be looking for something to convert to WVO. If you have the space and are willing to put in the work to get it set up its a brilliant system.