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Old 09-20-2021, 04:42 PM   #1
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Join Date: May 2019
Location: santa rosa,ca
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winter storage

i know its been discussed , but i've moved to Idaho after 70 years in Calif, im not sure what to do to winterize the motorhome. I know to drain the lines, but what about inside. the family cabin in Lassen we would put antifreeze in the toilet tank and toilet bowl to keep from freezing. Should i worry about the radiator and overflow tank. i have a 2000 Monaco La Palma, i guess it can get down to 12 degrees here, so i need some experienced help. Thanks
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Old 09-20-2021, 05:32 PM   #2
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I moved from CA to Ohio for a few years, some of the things I learned;
- I used winterizing fluid for RV’s every year - it worked great
- If you have a Hot Water tank, drain it and use the bypass taps
- Don’t worry about the radiator or tank - that fluid can handle way colder that 12 deg.
- If you have a whole house water filter, make sure you take the filter out. If you don’t winterize, that will be about the first thing to blow up.
- Don’t leave cans of soda or food in the fridge/pantry - Soda explodes rather dramatically.
- Don’t forget to winterize the fridge water/ice cube lines.
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Old 09-21-2021, 04:13 AM   #3
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Your can download an Owners Manual for your coach here:

Once you have downloaded the manual, do a search on "Winterizing". It has pretty clear instructions on how to do it on your coach.

Your local hardware store, HD etc. should have adapters to go from a compressor hose to the coach water system (just regular garden hose thread).
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Old 09-21-2021, 04:45 AM   #4
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If your black and gray tanks have just a little water in them, it will not cause any problems if they freeze. But, it doesn't hurt to add some RV antifreeze if you're worried about it.

For winter storage, it's a good idea to set some rodent traps and check them periodically during storage. And....mice love bullion cubes.....don't ask me how I know. So, removing all food is a good idea.

Don't forget to follow guidelines for exercising the generator i.e. running it once a month with a load.
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storage, winter

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