It is just a matter of choice on winterizing. Here in Northern Neck Virginia it really doesn't do the long cold snaps so I can really put the draining water at the their low points to good use for use. After the water has drained out then I just add a little bit of pink antifreeze to the P-TRAPS...
We do a lot of short trip camping off the power grid and sometimes find ourselves facing a very cold night up in the mountain off-road sites here on the East side. Doing the blow-out of the lines is great for us during these short trip camping times. My portable air compressor connects up at the city water port and does it thing real quick. Then all I have to do is drain the fresh water at the low point valves...
For us using the blow-out method is real quick and can be done usually in five minutes or so...
I too never use three winterizing values much ... Great to have some choice's to do your things your way... Have never tasted the pink stuff but doubt if I would like it...
Roy Ken
