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Old 09-20-2010, 02:07 PM   #11
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Maybe I am a little crazy but we do not cook or drink the stored water in the trailer I put antifreeze in everything that holds, stores or conveys liquid. Have been doing this since we bought our first trailer 5 or so years ago and have never ever worried about freeze damage. Like I said I may be a little off my rocker but i never have any worries when i fire things up in the spring.

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Old 09-22-2010, 06:51 AM   #12
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Some of my friends use the air method onlybut I have been using that and anti-freeze. I used air and blew out all the lines including interior and exterior showers. I then closed all taps and low point drains and put in the anti-freeze. I was surprised to find about 3 cups of clear water coming from the bathroom taps before the anti-freeze made an appearance. In total I used just under 2 US gallons of anti-freezeincluding filling the traps. Air may work for some, but I've never trusted that method alone. Just remember to make sure the stub-line from the city water inlet to the rest of the plumbing is also filled with antifreeze or blown out by gently depressing the spring-loaded inlet valve located behind the filter screen.

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Old 09-22-2010, 12:41 PM   #13
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Originally Posted by skip T
where are the low point drains on my 2008 sunset trail ?

On my ST30BH, they are on the door side on the rear end. They are tucked up in there. I have to get under on my back to get at them.
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Old 09-23-2010, 11:23 PM   #14
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Old 09-24-2010, 04:36 AM   #15
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How big of an air compressor do you need to do this? Last year we blew the lines out, worked very well, but we used my friends industrial sized (monster) air compressor, this year I don't have access to it, but I do have my own 5gal air compressor....would that suffice or do you need one with more 'oomph'


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Old 09-24-2010, 05:04 AM   #16
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Brad, your 5 gal will work fine. Just keep the pressure low.

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Oak Harbor, WA
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Old 09-24-2010, 05:44 AM   #17
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I use a 3 gal. compressor which works just fine. I then follow with anti-freeze to make sure, being as I live at 11,000 ft. elevation. Doesn't take long and I'll be doing it next week when I get back from current trip out. It's really nice here now in Ketchum, ID.

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Old 09-25-2010, 07:43 AM   #18
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Originally Posted by lenny
I prefer antifreeze. Once I have all the lines full, I know there is no pocket of water left behind to wreak havoc on our unit over the winter.

X 2
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Old 09-25-2010, 04:05 PM   #19
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Just did mine today. I prefer the antifreeze. Up here in the Great White North, it's cheap insurance. I typically use about 2 jugs. I start at the furthest point from the pump and work my way back. When everything is pink I turn off the pump, open the low point drains (draining antifreeze into a bucket) then opening up all the taps and leaving them open for the winter. This gets most of the pink stuff out except where there may be a low point in the system. I've done it this way with my previous trailers and never had any problems with freeze up. The reason I've done it this way is because a few years back I'd left half a jug of antifreeze in my rv and when I went inside about mid winter the jug wasn't frozen but very slushy. I then figured that if the taps were left open and most of the antifreeze was drained there should be some room for expansion.
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