Actually, WVO can be and is being used to produce Biodiesel. The difference, is the type of waste oil you are collecting (are they using canola, lard, peanut, coconut to cook with?), and the impurities that you have to filter out, and for which winds up requiring more chemicals during the titration process.

All-in-all, Biodiesel is good for us all...including our Strokes!

BTW, this thread should be moved over to the Bio and Alternative Fuels forum...where these items are discussed at length.

Good luck with whichever you try. I constantly run a B20 to B40 blend...and my Stroke thanx me.