With water pump off drain all water at low point drains first. I then attach an air quick disconnect adapter to the water inlet, set air compressor to 50-55 psi, then blow out the water lines one at a time till they are clear. Don't forget outside shower and kitchen. Then pour about one cup of pink stuff in each drain. Use antifreeze inlet on water pump and draw enough to fill the pump. I can do everything with less than one gallon of antifreeze and in about 15 minutes. Make sure fresh water tank and heater are drained.
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