nope never really heard of any data that proves it works.
Still, if I were to try to pre-heat fuel I'd basically wrap a copper line around a coolant hose and route the fuel through the copper bit. No extra electrical draw that way.
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"I got 350 heads on a 305 engine. I get 10 miles to the gallon. I ain't got no good intentions." - The Drive By Truckers.
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