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> Winterizing Black Water Tank
post Sep 14 2011, 08:09 AM
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Joined: 27-April 11
From: Vermont
Member No.: 56228

Hello to all in the group.
I live in VT and I am in the process of winterizing my TT for the year. I have read that after draining the black water tank you should always add 3 to 5 gallons of water to the tank to keep any remaining solids from drying out and keep every thing in solution. Do you still do this at the end of the season? What about freezing, wont it damage the tank? If I drain the tank what about any residual nasties left behind wont they dry out.
All replies will be greatly appreciated.

Brad - N1VWD

Yesterday is history, tomorrow is a mystery and today is a gift.
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dog bone
post Sep 14 2011, 08:23 AM
Post #2

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Joined: 16-December 03
From: Hewit, NJ
Member No.: 250

When you winterize. you will get some RV antifreeze from your toilet. I also put 2 gallons windshield washer fluid down there. It's a lot cheaper than RV pink stuff. About a buck a gallon at Walmart, sometimes.
I have been doing that for years now. Seems to work fine, no problems. The windshield fluid is good down to -50. Windshield washer fluid doesn't freeze in your car. Why would it freeze in the tank?

Bob and Deb Allwood
Diesel, the black lab
2003 ford f 350 6.0 crew cab
2014 Lacroose 318BHS
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