Welcome to the forum its a great place to get your questions answered. Not knowing your rig I'll give you the basics. First bypass your water heater and pull the drain plug. Next find the antifreeze inlet port, open that valve, close the suction valve to the potable water tank. Put the hose (attach if necessary) from the antifreeze inlet port into the jug of antifreeze and turn on your pump. now open each faucet one at a time until you have pink antifreeze at that location and then close. how this helps.
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Retired Navy
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho
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