[JRTJH]

Not yet mentioned is after flushing all the lines, open the low point drains and let "that last bit of antifreeze" out.... Years ago we kept smelling/tasting antifreeze well into the summer camping season. I finally found that "pink stuff" living without dilution, in both of the low point drains. Flushed them and the "offending taste" was gone. It's the same with the washer plumbing (if you have it and don't have a washer/dryer). There's just enough "venture effect" to bring enough antifreeze into the plumbing to make sure you know it's still there......