'2003 6.2 fi - 320hp - cooling question

Is it full or 1/2? What's the difference? Where does engine anti-freeze coolant flow in each type? Where does raw water flow in each type? I've got a manual that shows coolant flow but it does not distinguish between raw and closed very well. Engine serial # OMO46060

Re: '03 6.2 fi - 320hp - cooling question

Typically on a "closed cooling system (antifreeze) the raw water flows thru a heat exchanger, and in your case may flow thru a fuel cooler and it also should flow thru the elbows to cool the exhaust. Now your elbows could be one piece with the exhaust manifolds if that is the case then ther must be a raw water connection that may run all the way through the exhaust manifolds or near the end where the rubber boot connects. ( i am a bit unfamiliar with the newer efi motors)

The antifreeze is contained in the motor thru the engine water pump and thru the heat exchanger.


MY best guess