Winterizing question with Antifreeze
I tried the idea of blowing out the lines with air and although it worked to get most of the water out, I could still hear some water gurgling in the lines when the air was being pushed through and th...
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That was just residual pressure, no problem, perfectly normal. And no need to add more to the lines because of it.
Also normal behavior when you blew them out with air to start with. There is no way you can get those lines completely dry, there will always be a little water left due to the fact that water wets the plumbing, and will eventually puddle up in the low spots. This is usually not a problem. If a few drops freeze somewhere, it is unlikely anything will be hurt. But now that you've filled the lines with antifreeze, you are doubly safe.
Only part of the black tank at risk would be just behind the dump valve. It you drain it well, the few spoonfuls of water that will eventually settle there have lots of room to expand as they freeze, so again, no problem.
As long as you emptied the water heater, no need for antifreeze there for the same reason: the small amount of water you can't get out has lots of room to expand as it freezes.
Also normal behavior when you blew them out with air to start with. There is no way you can get those lines completely dry, there will always be a little water left due to the fact that water wets the plumbing, and will eventually puddle up in the low spots. This is usually not a problem. If a few drops freeze somewhere, it is unlikely anything will be hurt. But now that you've filled the lines with antifreeze, you are doubly safe.
Only part of the black tank at risk would be just behind the dump valve. It you drain it well, the few spoonfuls of water that will eventually settle there have lots of room to expand as they freeze, so again, no problem.
As long as you emptied the water heater, no need for antifreeze there for the same reason: the small amount of water you can't get out has lots of room to expand as it freezes.
