When I used the Pink antifreeze, to de-winterize I would hook up to city water. Leave the water heater in by-pass, and open the taps from the furthest point from the water inlet to the closest. Don't forget, the toilet, shower and outside shower.
Then I would fill the water holding tank about 1/4 way and flush out the lines again with the water pump on. When everything is clear, I would reset the water heater bypass to fill up the water heater and test it to insure it's working.
Finally, I would add some bleach to the fresh water and go through the sanitizing process at the same time. Then drain everything (ESPECIALLY the water heater because the lime deposits break off and need to get flushed out).
During all of this checking for leaks.
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Karl - Southeast, NY
2020 377 RLBH
2018 Ram 3500 Mega Limited 6.7L Cummins w/ Aisin
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