What would I have to do to my 1990's Rav 4 to have it run on Biodiesel or a Biodiesel mix?

Assuming its a diesel...then you dont have to do anything. As long as you make good quality filtered biodiesel. I've been making it for a while. Bought a 150L kit from Scintex Biofuels. www.scintex.com.au Havent had any troubles running biodiesel on my GQ Patrol but i always filter down to 1uM just to make sure my fuel filters dont get clogged. Out.