Recently bought a 1994 Toyota Hilux 4x4, with big offroad tyres and snorkeling equipment already fitted, lots of parts replaced with newer ones. It's a diesel and I know that diesel engines can run on vegetable oil with a little bit of additional kit; would a conversion be worthwhile? I'm assuming that fuel would be basically totally unavailable during SHTF and vegetable oil seems like it would be -relatively- easy to acquire.

pic related isn't mine but is similar