b100 biodiesel in both the cars listed below. quieter engine; smoother running and less clatter. Reduced smoke to almost nothing. Replace your fuel filters after the first few tanks as biodiesel will eat any nasties in your fuel system and deposit the crud in the filters.... or the tank screen if you are unlucky.
check out
http://biodiesel.infopop.cc for TONS about biodiesel and just regular vegetable oil use as well.
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