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Old 08-25-2014, 06:12 AM   #1
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Holding tanks

Hello everyone . I asked this question a while back about adding RV anti-freeze to the Black and gray holding tanks while using your unit in the winter. Today while I was online researching this someone also mention using rock-salt in the holding tanks. This will be my first winter in my RV. It is a new unit and the tanks are enclosed and it does have heat forced two them. As I use my unit during the winter it will be mobile I will not be hooked up to shore power . Your opinion is appreciated thanks.

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Old 08-25-2014, 06:20 AM   #2
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I would stay with rv antifreeze , Salt might cause some damage to your system.

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Old 08-25-2014, 06:54 AM   #3
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I would not use salt or any corrosive agent. If your tanks are heated and you are using the unit, I would not put anything in it. On the otherhand, you need to look at all pipe exposures to cold temps. I put heat tape units on potential cold spots and placed wireless thermostats at strategic points just to monitor what is going on temp wise. I also carry some NON TOXIC antifreeze just in case I need it. But would not put salt in my tanks.

Good luck.
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Old 08-25-2014, 09:13 AM   #4
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Your heated tanks are good to very low temps, below 20 degrees as long as the furnace is on. If you are out below this MOVE SOUTH. If you are winter snow machine guy or skier you still should be good to go. If lower temps like on towards zero then I would take more precautions.

2004 Clss C 31' Winnebgo
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