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Old 10-13-2020, 11:57 AM   #1
Join Date: Oct 2016
Posts: 84
Winterize Isata3

Could I winterize my rig by putting several gallons of antifreeze in the fresh water tank & run the pump until all faucets run pink?
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Old 10-13-2020, 12:24 PM   #2
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Location: South Western PA
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You could but it is advised not to.

Why??... because most fresh water tanks do not completely drain the contents.

If you put R/V antifreeze in the fresh tank and your tank doesn't drain completely, it takes MANY times of filling and draining to dilute and remove any remaining antifreeze. It is simply not worth the effort when a antifreeze port can be added to the pump fairly inexpensively or many R/Vs come from the factory with them already added.
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Old 10-13-2020, 03:00 PM   #3
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Location: Bristol, IN
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Originally Posted by ACMN View Post
Could I winterize my rig by putting several gallons of antifreeze in the fresh water tank & run the pump until all faucets run pink?
I would not....

depending on year, it should still be pretty easy.

1. For newer models we provide an anti-freeze take up tube at the water pump. Uncoil the tube, the the 3 way valve, put the tube in a gallon of antifreeze. Use the pump as you normally would and it will draw antifreeze directly from the gallon container as you operate each fixture.

2. For older models, you can use the Anderson Valve. It works the same way...BUT, you need to leave the lines filled (not drained). If you drain the water lines then there is not enough water in the lines to prime the pump and create suction. Your best bet is to leave the lines full of water. Cut off an old hose for about 6' of line. Put the cut end into the antifreeze jug, connect the other end to the Anderson valve. Turn the valve to "Winterize". Now run the faucets and pump as you normally would. it should draw antifreeze from the container.
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winter, winterize

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