Tow trucks are wonderful tools.  Does this place have an alley?

I saw my first Listeroid about two weeks ago.  What a rush!  This sighting was the result of Biodiesel and Vegetable Oil taking over my brain almost six months ago.  And then last night I had a dream of sorts.  Why not get rid of the water completely and use my fuel system as my cooling system as well.  It gets better; my fuel would be preheated to around 225 F because I'd be pulling it right out of the engine block.  I also realized that I wouldn't be held back by the boiling point of water either.  Hence, thermosiphon the cooling fluid (fuel) back into the fuel tank rather than having an unnecessary radiator and that terrible corrosive stuff called water.  The only down side is maintaining a 20 or so gallon surplus of fuel to facilitate cooling.  Is this genius or what?  Wait, wait - the increased fuel tank temperature would also discourage the accumulation of water.  Be gentle people - this is my first posting - let's not make it my last.