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Old 10-10-2011, 03:10 PM   #1
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Do I really need RV Antifreeze?

Just got done draining my camper's water lines and it occurred to me that what if I just left the low point, water heater and fresh water tank, and faucets, open?
No water in the system, nothing to freeze, right?

I read that I can use windshield washer fluid in the drains, gray and black tanks ($1-2/gallon vs $4-6 on rv a/f).

When you winterize a house all you do is drain the lines and leave the faucets open and put some a/f in the traps to keep sewer gas out (since plain water will evaporate).

Am I missing something obvious?
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Old 10-10-2011, 03:20 PM   #2
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I open all the lines one at a time and use an air compressor set at 40 PSI and just blow the lines out. I start at the closest to the city water connection and work my way to the back. Don't forget your toilets, outdoor shower and if you have a washer hook up to open it as well. I do use anti-freeze in the drains and pour some in the toilets to keep the seals from drying out, but 1-gallon does it all. Remember to take the strainer off prior to your water pump and dump it. I forgot once and well you know the rest!
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Old 10-10-2011, 03:21 PM   #3
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basically what i do. drain the water lines at the low point drains...blow the lines out with air compressor and put a/f in the traps. 4th year now with this system and no problems yet ! use rv a/f......hadn't thought about auto w/s antifreeze.
don't forget to drain water heater .
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Old 10-10-2011, 03:30 PM   #4
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Not saying your method won't work, but why not just go the normal routes and blow out the lines or use antifreeze? It seems like an unnecessary risk to do otherwise.

As far as antifreeze vs windshield fluid, it takes about one gallon of antifreeze for most trailers. Is it really worth saving $3-4 a year to use windshield washer fluid?
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Old 10-10-2011, 03:36 PM   #5
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Be Careful!!!
I know some folks use windshield AF in the drains.
DO NOT USE WINDSHIELD ANTIFREEZE IN WATER LINES.
IT's POISON.

I also think the alcohol could evaporate and leave your
drain exposed to freezing.

You're talking about saving a lousy 2 bucks.
Why risk it?

I'm a cheap-skate but I use RV antifreeze.
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Old 10-10-2011, 07:01 PM   #6
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i to blow all my lines for about a half hour i then dump some anti freeze down each drain woks great
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Old 10-10-2011, 09:28 PM   #7
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I pulled all the drain plugs (tank, low point hot and cold, water heater) and let things drain. Added 3/4 of a gallon of RV A/F to the fresh tank and closed up the drains, bypassed the water heater, ran the pump until I got pink out of every faucet, put a big more A/F in the drains and pulled the drain plugs again and got only a trickle anyplace.

I got a lot of clear water out of the hot side at the faucet- apparently that line (from tank to faucets) doesn't drain well on my camper.
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Old 10-10-2011, 10:21 PM   #8
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Quote:
Originally Posted by j2detroit View Post
i to blow all my lines for about a half hour i then dump some anti freeze down each drain woks great
and drain the fresh H2O tank and pull some antifreeze into the water pump by removing the fresh water line to the tank and adding a line to the RV antifreeze. Empty the factory water filter before blowing out the lines and after sucking in the pink antifreeze. No pink stuff in the water lines required (except the pump). starting up the water system in the spring is a breeze.

It's a fairly easy process and I hope to repeat it again when we use the camper again over Thanksgiving!
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Old 10-10-2011, 10:27 PM   #9
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Does everyone really believe that there is no low spot in the lines where water will collect/freeze and break open the lines. I`m not taking any chances. I use RV antifreeze and the cost is about $12 to do my trailer, worth every penny!
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Old 10-11-2011, 12:37 AM   #10
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This will take guts to say but I learned something new tonight while reading the replies:

1) I didn't know there were special AF for auto's windshelds
2) I didn't know about using AF in the home either

Both make sense after thinking about it so there's some hope left anyway...
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