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Old 01-01-2013, 07:47 PM   #1
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Join Date: Dec 2012
Posts: 65
First Timers - Questions on Winterizing our RV

We just had the nicest coach in our collection, delivered November 14th, and I was told that it was winterized.

This is the coach (an Ultravan) I'm talking about.

Here is the floor layout of this coach.

I like to be 110% sure I don’t allow any damage while we are the new stewards of this coach.

In February and March we can see temps of -40f and colder.

My questions are:

a) What is the best RV anti-freeze to use that will work to -50f?
b) Can I simply place the inlet water hose in the bottle of anti-freeze and pump it throughout the entire plumbing system? Or
c) Will I have to do much more than that to be sure all water lines and traps are protected?

Thanks, Tony

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Old 01-01-2013, 08:07 PM   #2
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I can't help but congrats on a great RV! Please don't say it will be out in the cold!

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Old 01-01-2013, 08:19 PM   #3
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I would drain the entire water system... Only takes us about 10 minutes... I drain the hot water heater first,, ours has a large plug (1 1/16 socket) witch is attatched to the annode rod inside. Replace that, then we hook up low pressure air (30-40psi) through a fitting to screw into the city water hook up.. We bought ours at wally world. Open the farthest faucet first till it blows air, shut it off and go to the next one closer to the tank... When done, empty your holding tank, and pour a little rv anti freeze down each sink/drain to get it in the traps... Needless to say empty the fresh water tank first... Cool looking RV !!!!! What is it ???
Monkey, pilot of a Great Dane hauler,
2015 Silverado 2500 Duramax/Alison 4x4 CrewCab 2016 Cougar 28SGS
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Old 01-01-2013, 08:31 PM   #4
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I can help a little on the product to use, but I'm not familiar with how the plumbing system works in your new coach. If it has an on-board fresh water and pump I may be able to help.See below

I use this product, however I think most RV antifreeze products are good to -50° I get mine at camping world, but Wal-mart also sells RV antifreeze.

If your rig has a fresh water tank then most folks blow the system out will an air compressor regulated to 45# of air pressure. Hook it into your city water hookup. Flip your water heater bypass and drain the water-heater. Then go into the coach and open each faucet individually to blow water out of the system. Flush the toilet as well. Quit when you are getting mist from the faucet, shower head or toilet. Drain your fresh water tank and then refill with 3 gallons of antifreeze. Flip you water supply over to your on-board fresh water and then turn on each faucet, the shower head and the toilet, until pink antifreeze is running out. Run it long enough to get at least a quart of antifreeze into the drains P-trap and into the gray and black water tanks. You should now have antifreeze into every place water flows.

Some folks can skip the blowing out and just drain fresh water tank and then add antifreeze, however you are in an extreme climate with temps to -40° so blowing will assure that you haven't diluted the antifreeze to a level that could cause you some issues.

Hope this helps.
Marc & Jan
Molly, Abby & Katie | The Cocker K-9 Kids!|Toad 2014 Cadillac SRX
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Old 01-01-2013, 09:03 PM   #5
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336Muffin, It has been outside all its life and it has to remain outside, a little longer, until I get my garage/storage building built to house my shop, restoration and storage areas.

Here is our collection so far, of Ultravans, sitting on the concrete pad.

Monkey, Thanks for your help! And our coach is an Ultravan.

Marc, Thanks!! Once it was home and I had time to look things over - I found that all our tanks are missing their drain plugs.

I hope to find a way to by-pass the fresh water inlet and tank and to use the pump to pump the anti-freeze throughout the water lines.
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Old 01-02-2013, 06:46 PM   #6
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That thing is cool!!

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