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Discussion Starter #1
This'll show just how little I know about diesel or the Duramax but I forge ahead nonetheless. The other day my new-to-me truck was on a lift and I got to have a good look around. I noticed something that had a radiator/cooler design just in front of the fuel tank. Are there conditions that require the fuel to be cooled on its way from the tank to the engine?
 

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Discussion Starter #3
Thanks, I didn't know that fuel was returned to the tank.
 
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