Quote:
Originally Posted by Lubehead
This post makes me want to ask a question relating to running low on fuel. As a former owner of a GMC Duramax diesel, the owner's manual advised against running low on fuel as the fuel is used as a cooling medium for the pump as it is returned back to the tank. Does anyone know if the 35d engine fuel system design would be subject to the same caveat?
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"as it is returned to the tank"?
I don't understand that, what do you mean?.
Diesel fuel and gas are petroleum products and they act as lubricants for the fuel pump and/or sending unit, not sure that they cool the pump except for keeping them lubricated, and without lubrication they will "burn out".