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Old 09-23-2014, 01:47 PM   #1
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Antifreeze vs Blowout

We are going to get ready to winterize our 267bhs in the next few weeks and wondered if there were many opinions on blowing out the water lines with an air compressor and dumping some anti-freeze down the drains vs. pumping anti-freeze throughout the whole system and sanitizing and spring.
It is getting stored on the pad next to my house in Minnesota so the winters can get a bit brutal.

Thanks
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Old 09-23-2014, 02:16 PM   #2
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I will do both.....I paid a lot of money for this thing....nothing is going to happen to it if I have anything to do with it....10 dollars worth of pink and maybe 100 gallons of water to rinse in the spring.
No brainer IMO
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Old 09-23-2014, 02:18 PM   #3
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I do both. It's cheap insurance. I can winterize for under $20 using 3 gallons of antifreeze after I blow out the lines with compressed air @ 40psi. I like having antifreeze in the system because it keeps rubber seals from drying out - grey and black tank valves, toilet bowl seal, even the faucet seals themselves. Make sure you remember to winterize the city water connection, outdoor shower, and black tank flush line as well.
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Old 09-23-2014, 02:48 PM   #4
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Here in TX, I got away with just blowing out my system and dropping some pink stuff in the traps last winter. It will be the last winter I do that. Like mentioned above, it's not worth the risk, and it's cheap to do both.

Now, this was in TX where we can sometimes count the number of nights below freezing with our fingers, and most years we don't even need both hands. Most of those nights it gets significantly above freezing during the day after a night below freezing.

If I'm you, in MN, I would do a full winterization (pink stuff everywhere) without even a second thought.
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Old 09-23-2014, 02:52 PM   #5
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Even a small amount of water can freeze and expand, damaging a waterline. It is cheap, cheap, cheap to buy a couple or 3 gallons of antifreeze and displace any expandable water.

Blowing with water may, or may not, remove all the water. Antifreeze is your safest bet at removing water.
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Old 09-23-2014, 03:06 PM   #6
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I just blow out the lines, drain the tanks, drain the hot water tank, and poor a gallon or so down the P-traps and have never had a problem. A little water freezing in the bottom of a flat holding tank won't hurt anything. The PVC drains are schedule 40 and shouldn't break even with some water in there. Many other parts of the camper are flex hose which will expand without damage if there is any left over water in a line. I go through all my lines and drains twice cracking them one at a time just to be sure. Plenty of RV owners do it this way with no problems. The cool thing is when you are ready to use the camper next spring all you have to do is fill the fresh water tank and you are good to go rather than pump and blow out all that sticky RV antifreeze and then sanitize and rinse and then clean up the mess as it always gets all over stuff. This seems to me to be four time the work and take four times as long as just blowing the lines out which only takes a few minutes. I use 20 - 30 psi air pressure BTW.
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Old 09-23-2014, 03:32 PM   #7
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I do both. It's only a few minutes to blow out the lines and doesn't cost anything.

But this is really personal preference. I really don't know anyone that has only done one or the other that has had freeze issues. On the flip side I do know someone that replaced plumbing (at a cost of $600) because he thought winterizing was a gimmick.
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Old 09-23-2014, 04:25 PM   #8
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Quote:
Originally Posted by DocBrown View Post
On the flip side I do know someone that replaced plumbing (at a cost of $600) because he thought winterizing was a gimmick.
Oops, that's an expensive lesson! AND that assumes that only the plumbing was damaged. If you have a cracked fitting in an obscure place, you could be leaking water for a while before you even notice. Then you have additional repair issues above and beyond replacing the plumbing.
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Old 09-23-2014, 04:27 PM   #9
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Quote:
Originally Posted by wwsmith111 View Post
I just blow out the lines, drain the tanks, drain the hot water tank, and poor a gallon or so down the P-traps and have never had a problem. A little water freezing in the bottom of a flat holding tank won't hurt anything. The PVC drains are schedule 40 and shouldn't break even with some water in there. Many other parts of the camper are flex hose which will expand without damage if there is any left over water in a line. I go through all my lines and drains twice cracking them one at a time just to be sure. Plenty of RV owners do it this way with no problems. The cool thing is when you are ready to use the camper next spring all you have to do is fill the fresh water tank and you are good to go rather than pump and blow out all that sticky RV antifreeze and then sanitize and rinse and then clean up the mess as it always gets all over stuff. This seems to me to be four time the work and take four times as long as just blowing the lines out which only takes a few minutes. I use 20 - 30 psi air pressure BTW.
This is exactly what I do, and the same reason I do it this way. I have never had any issues caused by water freezing in the lines over the winter months, and it does get COLD on occasion. We saw -20F a few times last winter.
PS @ wwsmith111 - My truck has towed the truck that towed the space shuttle...
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Old 09-23-2014, 04:32 PM   #10
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That's great Bobx2 lol! A Duramax is on my wishlist!
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