Winterizing Low Point Drains With RV Antifreeze

[oldryder1]

Back in MN from TX. Grand Design 27RL. Freezing overnite temps tonite. Camper has hot and cold low point drains.

I will open those to drain water.

When adding RV antifreeze via the pump should I leave the low point drains open until I see pink or can I just close them after draining the water?

My concern is the antifreeze may push some water to the low points which would then freeze?

thx to anyone taking the time to offer advice.

 

[Gary RV_Wizard]

If the low point drains truly are what they claim, then no worries about closing them. They already drained the water out. And the anitfreze you put in will mix the the water - it doesn't stay separate. Plus, if you leave them open, the antifreeze you pump in will mostly go straight out the drains and never reach the rest of the system.

 

[oldryder1]

makes sense. thx Gary.

 

[Kirk]

They already drained the water out.

Don't forget to open all of the faucets and the toilet flush valve to drain those and remove the drain plug from the water heater.

Freezing overnite temps tonite.

It takes quite a few hours of below freezing temperatures to freeze the especially if the temperature is only dropping into the high 20's and then warming to well above freezing in the daytime.

 

[gwinger]

I run the A/F throughout the entire system. When done, I open the low point drains until I see pink, then close them. May be over kill, but only takes 10 seconds longer.

 

[mnmnutswer]

I use my air compressor set at 35 psi. Blowing the water out one faucet at a time then the low drainage caps. Then I pump the antifreeze through out the system and faucet's into the drains. Once the water’s out and antifreeze in then I open low water drain and leave it open till next season. I also open all tanks draining them, then cap the tanks with pre drilled (holes) caps to allow air to dry tanks over the storage time. A little extra you do the less headache come the next season.

 

[John From Detroit]

I use my air compressor set at 35 psi. Blowing the water out one faucet at a time then the low drainage caps. Then I pump the antifreeze through out the system and faucet's into the drains. Once the water’s out and antifreeze in then I open low water drain and leave it open till next season. I also open all tanks draining them, then cap the tanks with pre drilled (holes) caps to allow air to dry tanks over the storage time. A little extra you do the less headache come the next season.

I did the air. Blowing several times. then Pink in the drains and toilets only. Did not pink the lines.
Did not have to get rid of the taste of the pink come spring either. Just flush with bleach/water soution"
Then re-fill with fresh water flush a little
And that's all

 

[Derby6]

I simply run pink antifreeze thru entire system. Then relieve pressure from toilet and all faucets and drain low points. Leave low point partially open in storage.
All water out and pink not pressurized so room to expand if extreme cold does slush up or freeze it. No issues in decades.

In edit I don’t think my ‘07 toy hauler has a low point drain. Just relieve all the pressure. And believe that pink stuff Definately slushes or freezes here in AK.