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Old 10-03-2018, 06:46 PM   #1
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winterizing

Is it most common to leave the water system filled with antifreeze over the winter or drained? Manual says to drain, but in my boats and previous truck campers have always left the antifreeze in system over the winter. Have I been doing it wrong.
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Old 10-03-2018, 07:37 PM   #2
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As long as you run antifreeze through the system there is no right or wrong as to drain or leave full, safe either way. On my boat I blow out all the water lines with air but the engine blocks I pump full of antifreeze to keep internal passages from rusting.
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Old 10-03-2018, 07:47 PM   #3
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I always blow the water out first and then use antifreeze leaving it in place until spring. The North Point directions are a little different and there are a few more thing to consider than my Eagle had. It says to turn certain valves to 45* for a few seconds so I followed that as close as possible. In my case it payed to read the manual.
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Old 10-03-2018, 08:15 PM   #4
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Lots of people leave it in. Some let it drain via gravity, some blow it out.

There's no advantage to leaving it in, aside from skipping the step of getting it out.
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Old 10-03-2018, 08:47 PM   #5
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Here is a recent and ongoing thread on the topic...

https://r.tapatalk.com/shareLink?url...8&share_type=t
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Old 10-05-2018, 07:24 PM   #6
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The recommended methods of winterizing the water system are to either use compressed air to blow the water out or to pump pink marine antifreeze throughout the system or a combination of the two. The one advantage of using the antifreeze is you can physically see it (assuming you aren’t color blind) coming out of the faucet. This provides a comfort level that the compressed air method does not. If you pump pink in on one end and see pink coming out on the other end you can be 100% sure that the entire water line is pink and will be freezeproof to the temperature rating of the antifreeze. If you blow compressed air in on one end and see water come out the other end and feel air moving out the faucet you can be pretty sure you got it all. But maybe not quite 100% because you can’t differentiate the color of air. You need to be careful not to use too high a psi so you don’t damage the water lines or connections and make sure the air you feel coming out isn’t an air bubble. In the Spring you just reverse the method by pumping water in until it runs clear at each water discharge point. If you have an ice maker or a washing machine it is a little trickier and you are better off following the manufacturers instructions. Both methods work. Just use the system that you are comfortable with.
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Old 10-09-2018, 11:04 AM   #7
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This will be the first time I try blowing out the lines before I put in the antifreeze. In my old motorhome I had to replace two toilets foot valves because of winter freeze. I can't agree that if you see pink you can be 100% sure you got all the water out! Somehow in my particular foot valve some water remained and froze and cracked the valve. I am 110% sure that I got plenty of antifreeze thru the line into the toilet yet I had to replace the valve. New motorhome -two toilets to worry about so I am going to try blowing the lines first, then run antifreeze into the system then re-open the low point drains operate the toilets to let those lines drain and the sinks and shower as well as the clothes washer hook ups.
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Old 10-09-2018, 07:28 PM   #8
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Blow lines, fill with antifreeze. Even at -25 here on the frozen tundra have never had a problem when doing them both.
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Old 10-09-2018, 08:37 PM   #9
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Quote:
Originally Posted by beachvic View Post
This will be the first time I try blowing out the lines before I put in the antifreeze. In my old motorhome I had to replace two toilets foot valves because of winter freeze. I can't agree that if you see pink you can be 100% sure you got all the water out! Somehow in my particular foot valve some water remained and froze and cracked the valve. I am 110% sure that I got plenty of antifreeze thru the line into the toilet yet I had to replace the valve. New motorhome -two toilets to worry about so I am going to try blowing the lines first, then run antifreeze into the system then re-open the low point drains operate the toilets to let those lines drain and the sinks and shower as well as the clothes washer hook ups.
Thatís unfortunate that you had an issue with winterizing a previous RV. Somehow it would appear that there was an issue with the toilet, foot valve, plumbing or some combination of the three since you did not have any problems with the water system throughout the rest of the MH. I guess my previous post reflected my experience of winterizing several TTís and MHís over the past 30+ years using the antifreeze method without any adverse results. I certainly didnít mean to imply that using compressed air is not an acceptable method because as you can see there are lots of folks throughout the RVing community who do it with great success. Iím just an old fogie who has found something that works so Iíll stick with it just a little longer. Good luck to you in winterizing your new coach and Iím sure you will be smiling when you use it for the first time next Spring.
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Old 10-10-2018, 05:49 AM   #10
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You could try removing the valves as part of your winter prep work and leave them out over the winter. I had a Class C and lost a toilet valve over the winter as well but I used the air method, thought I had it all out as well. I would try pumping AF in and leaving it in, that's my plan for our new TT this year and going forward. While not terribly expensive, it is a pita for it to happen.
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