Blow out the water??
I will be using my TT during the winter on occasion. Our coldest expected is perhaps 20. On rare occasions it may get to 15. I have an adapter to use compressed air to blow out the lines. Has a...
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I've used both systems. The air never seemed to get all the water out so I didn't trust it. I now use antifreeze exclusively, and I recycle it by pumping it back into the bottles and using it again next year. I know it gets slightly diluted, so I add a new bottle each year ($3.00). I also have a gauge to check the strength of the antifreeze.
