2004 6.0..... Did BeachBumbCooks flush, with thermostat on. Drove truck till therm opened, opened stopcock, drained, filled with distilled water and did again.. 4 times. Last drain, closed stopcock, started to put in GO5 and only got a little over 2 gallons in before degas was full. Anyone have any ideas.... Really bumbed at this point. Thanks for any input.

Osteo16

 

not sure why this time its not re-filling this time around, try removing top hose to see if maybe its an air pocket thing.

 

To get the majority of water out you need to pull the lower hose and open both block pet*****. You can do it with one petcock but will take a little more flushing. When done add the proper amount of straight coolant for a 50/50 mix and then top off with distilled water.