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Old 10-11-2015, 04:10 PM   #29
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OK, few years back I decided that compressed air is the way to go... So I set the unit up and BLEW AWAY... No pink "stuff" required... until the Spring when filling the fresh water system I had water running out on the ground! Seems there was a low point in the Aqua Hot loop and moisture collected in the low spot (after the lines were blown out) and broke the connection!

For me, IF I have to winterize it will be RV antifreeze in the lines... and BTW, if you're putting RV antifreeze in why are you wasting your time with air?? The Pink stuff displaces the H2O... Best plan is to head south!!

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Old 10-12-2015, 07:43 AM   #30
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antifreeze doesnt displace water. it mixes with water. if you dot get a good mixture it will still expand. the best way is to blow the unit out, then add the antifreeze.
antifreeze only will work if you use enough of it. i found about 5 gallons works for most coaches without blowing the lines out.
i learned the hard way, back when rv's used copper lines. even the smallest amount of contamination caused problems. dont forget the water heater.
but in the end, its your coach. its your money. use your own best judgement.

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Old 10-13-2015, 04:16 AM   #31
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Glad we all agree on the proper way to winterize Now lets talk about motor oil,
1998 Southwind Storm 34S
2015 Ford Focus Hatchback SE
Retired Air Force 1981-2006
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Old 10-18-2015, 12:04 PM   #32

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Originally Posted by jjva343 View Post
I've never winterized my motorhome. I have a new "DeWalt DWFP55126 6-gallon 165 psi pancake compressor," which supposedly doesn't use added oil. Can I safely us this compressor to blow out the water lines in the motorhome? Thanks for any advice.

I finally winterized my Damon Astoria, using the compressed air method, combined with use of antifreeze in the Splendide washer/dryer, and in all the P-traps. I'v become fond of the deWalt 165 psi six gallon pancake compressor. I didn't use the wet method in the water lines because we will be heading south in a few weeks. While not intending to make fun of one RVer's unfortunate experience with the 20 degrees below weather in ND at the Bakken oil fields, here is his own posting of how his RV handled truly cold weather.


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compressor, winter

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