Quote:
Originally Posted by oil pan 4
One of the other diesel guys posted a study about fuel heating. I think it was by some university.
The only OEM that tested fuel heating/cooling that I know of was cummins marine, they found that fuel sent to the pump at a tempertuare of 75'F seemed to preform best.
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I believe the OEM testing back then wouldnt be targeting the best FE, look at what they are doing today with full size trucks with it being common to be getting over 20 mpg .
Funny thing though about the 75F number you posted, the heater in the fuel filter housing is set to turn off @ 70~80*... I read something like that a few years back which made me think it might be worth looking into. On another diesel forum guys started putting fans on a cooler that was on the return line to the tanks to keep the in-tank temps from climbing to much. Some (but not all) reported back better FE from it.
I will go and do the testing anyways and see what it looks like. If no gains, then at least there will be a thread on it that someone can refer to.