Good Sam Club Open Roads Forum: Travel Trailers: Winterizing black and gray tanks
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Open Roads Forum  >  Travel Trailers  >  General Q&A

 > Winterizing black and gray tanks

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Beverley&Ken

Tottenham,Ontario

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Joined: 08/22/2006

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Posted: 10/13/21 07:52pm Link  |  Quote  |  Print  |  Notify Moderator

On my c-class I dump the tanks, close the valves and then winterize. what ever goes in the tanks (usually mixture of water pushed out and some pink). BUT I have no piping between the tanks and the valves. The valves are located on the side of the tanks and then the Y connector to the stinky slinky.
When I winterized my neighbours 5th wheel, I noticed that there was 5 to 8 feet of piping from the bottom of the tanks to the drain valves, in that case the pink is needed to keep the drain pipes from freezing.
Just depends of your unit.
Chemicals. Never used them, camping or storage.

Ken


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spoon059

Just north of D.C.

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Posted: 10/14/21 06:53am Link  |  Quote  |  Print  |  Notify Moderator

I don't want to leave anything in the black tank to dry and stick over the winter. For 11 years we've left a couple gallons of water (plus a little antifreeze from winterizing) in the black and gray tank. There is plenty of room for expansion in the tank, and it doesn't allow any residuals to dry in the tank.

I live in the mid-Atlantic, so winter lows rarely get into the single digits here.


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Grit dog

Black Diamond, WA

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Posted: 10/14/21 09:01am Link  |  Quote  |  Print  |  Notify Moderator

Dump ‘em. Run a little antifreeze down the drains to clear water out of P traps.
That is all.


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CavemanCharlie

Storden,MN

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Posted: 10/16/21 08:06pm Link  |  Quote  |  Print  |  Notify Moderator

I drain them completely then I add some pink antifreeze to them just to keep the seals on the drain valves lubricated.

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