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[bburrito]

I have a 91 E350 that I am planning to convert over to vegetable oil. The van already has dual tanks as well as the stock fuel switch. From what I can tell, the things I would need to do would be to add an additional filter to the tank I am going to use for vegetable oil as well as additional heating to ensure that the vegetable oil is hot when it makes it to the engine. I would also plumb the fuel return line to go into the VO tank and not the regular diesel tank so as to always have a tank of regular diesel.

My 2 main concerns at this point are about heating the regular diesel and as well as using the stock fuel switch to switch between the tanks. If at some point the regular diesel passes through a fuel heater, will that be a problem? How about the stock switch? I am planning to just manually switch between the diesel and vegetable with an understanding that I need to purge the lines before I turn off the vehicle. But will using vegetable oil have any negative effects on the stock switch?


I am replacing all of the fuel lines in my van and have upgraded my electrical system to handle the additional electrical loads for the heaters. But is there anything else that I am missing here?