I haven't heard of any of the electric pumps that actually work well for WVO. Most last a few thousand miles, tops. I have however heard of people having sucess using an oil pump to get the WVO moving. I believe they are called oil sump pumps, and you put the pump in the tank, somehow fit a rod to the pump that extends out the top of the tank, and then attach a 12v motor to that.

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87 300D - Running on Veggie oil; 260,000 plus miles; Original #14 head