Check by your water pump too, it may have a winterizing kit that sucks the anti freeze right out of the jug. If not they are inexpensive to buy and easy to add. Once you have filled the lines with anti freeze open a faucet until the pressure is off, remove the screen on the city water fill and push in the check valve until a little anti freeze comes out. Make sure you bleed off the pressure at a faucet before you do this.
Also don't forget the outside shower and Washer hook up if you have one.
Pour about a cup of anti freeze into the drain traps.
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Tim
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