Coolant flush
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Posting Guru
Joined: Mar 2008
Posts: 1,734
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From: Monroe VA
Coolant flush
Finally got around to doing the coolant flush and installing my 203* thermostat. I only got about 5 gallons out when I drained the radiator and then got a little bit more out of the block drain on the driverside. I couldnt get the block drain on the passengerside to turn so I left it. I then pulled the thermostat and put it back together without the thermostat. I filled it up with well water and run it a while. Not sure how much came out when I drained it that time, so then the thermostat neck was leaking so bad I just held the water hose to it with the truck running for about 5 mins and I had clean water coming out(with no thermostat). Then I put the new thermostat in and filled it with distilled water and it would only hold 4 gallons. Then I run it for 30mins probably and drained it and filled it with 4 gallons of antifreeze and 2 gallons of distilled water. So my question is should I be ok? I also installed the fitting for the bypass filter and ran the line for it but I havent installed the filter yet(ran out of time).
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Joined: Feb 2006
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From: Byron, IL
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Cargo Master
Joined: Jan 2002
Posts: 2,079
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From: LA and CO
Mine only took around 6 gallons and that was forcing it. I pulled both block drains and the radiator drain and pointed the nose uphill and downhill to get as much out as I could. I used the 50/50 premix of Rotella ELC.
I think you'll be fine.
I think you'll be fine.
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Post Fiend
Joined: Feb 2007
Posts: 7,191
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From: Blairsville,Ga
after flushing you can add 4 gallons of full strength and top off with water and have 50/50 mix
you have 75% the coolant you need