Alan Petrillo wrote:
Philippe Vessaire wrote:

No anti-froze agent needed, just an fuel/water heat exchange and the whole
tank become warmer when the engine is runnig. For pure biodiesel, the car
choice is an exhaust/fuel heat exchange.

I've never seen this. All of the biodiesel/vegoil cars I've seen have
used coolant/fuel heat exchangers.


AP

A lot of the car retrofits bypass the fuel return. The piston-pump
diesels typically have 2 fuel lines, one up and one back. If you had a
consistently high flow you potentially could use the return line to
feed heated oil to to the tank. In the case of biodiesel this would
probably be sufficient to heat the tanks. Though it would make plumbing
fuel tank selector a bit more complicated.

-Matt