You might be kinda skeptical to try 100% veg oil with the stock pump, but would you still consider trying that? Or have you set on a maximum limit to the veg oil blends? BTW I have seen some reports that every Diesel vehicle can tollerate a maximum 30% veg oil blend in regular Diesel fuel, regardless of injection system, but I take it with a grain of salt specially considering the newer and more sophisticated aftertreatment systems that are already problematic dealing with biodiesel...
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