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There is nothing you need to do to run on BioDiesel.
But to run on SVO (straight vegetable oil) & WVO (waste vegetable oil) there are some things that you should do. Although, the IDI engine is very tolerant.
ive been running straight used veggy oil in my rear tank for the last two years. works great and smells even better. i make a point to put a little diesel clean in there every onces and a while though. cheep insurance!
You don't have to do a thing. Just make sure you change your fuel filter more often at first. Biodiesel will take all the crud out of your fuel system. All hoses are compatable after 1994.