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Old 10-08-2016, 07:15 PM   #1
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Winterize black tank?

Just took delivery of our new ( to us ) Palomino. We will be winterizing in a few weeks but I'm not sure about the tanks. Do I just drain the fresh water tank and leave it alone after I pump antifreeze through the system? What about the gray water and black water tank? Do I flush them out and leave it or do I need to put some antifreeze in them? Thanks for you help!
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Old 10-08-2016, 07:47 PM   #2
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We good articles in here about winterize and d-winterize our rigs. According to what I've read, you empty them both. How to Winterize. The Facts
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Old 10-08-2016, 08:23 PM   #3
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Gray and black water tanks should be dumped, rinsed, and a small amount of antifreeze added ( 2-3 cups should do). Don't forget the sink traps and run antifreeze through your stool flush system (flush toilet till pink comes out).
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Old 10-08-2016, 08:51 PM   #4
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Also leave some red anti freeze in toilet to keep the seal from drying out and maybe leaking. Enjoy the new RV.
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Old 10-08-2016, 09:00 PM   #5
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Thanks for the help!
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Old 10-08-2016, 09:35 PM   #6
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I don't winterize my black water tank; I'm not afraid of poopcicles.
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Old 10-10-2016, 08:54 AM   #7
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I dump and rinse the black and gray tanks, then leave the valves open.

When I winterize the rest of the system, water being pushed out of the lines will drain into the tanks, and then dump on the ground.

The last step is to pour antifreeze into the p-traps, drains, and toilet. Residual antifreeze will drain into the black and gray, and find its way into any nooks or crannies and displace the water.

IMPORTANT - Remember to close those valve next spring...
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