Drain lines after pumping antifreeze

[WDW]

I’ve been thinking - ( DW would argue that’s dangerous). Should I drain / do you drain the water lines after pumping antifreeze through the system in order to give it expansion space as it turns to slush in very cold weather?

[Tha_Rooster]

Originally Posted by WDW

I’ve been thinking - ( DW would argue that’s dangerous). Should I drain / do you drain the water lines after pumping antifreeze through the system I order to give it expansion space as it turns to slush in very cold weather?

It’s only suppose to turn to slush without expansion.

[Soppy]

I blow out my lines first, then run the pink through, then blow the lines out again. I also leave all the valves open as well as the drain plug on the hot water tank. I will pour antifreeze down the drains and in the toilet. Overkill , maybe but I would rater do that than replace cracked lines.

[magicbus]

I drain it out via the low points because it has done its job and there is no added value to leaving it. I also dump what is in the water filter (cartridge already removed of course) into the traps.

[Gary RVRoamer]

You are way over-thinking this. "Turns to slush" doesn't mean it begins to expand. The common RV antifreeze is good down to -50 F and some brands may claim -100F. It probably gets slushy well before those temperatures are reached, but it still isn't expanding and creating pressure on the tubing and fittings.

[Old-Biscuit]

I thought the whole idea of RV anti-freeze was to fill rv plumbing lines with a medium that doesn't freeze

Then come spring....drain and flush system

[thegats1]

That's kinda what I was thinking. Our coach is at Tiffin now, and I had no idea they required winterizing when leaving it with them for warranty work. They will do it for me apparently, but it's not free. Anyway, wondering if when I pick it up it will be dewinterized. If not, should be fun figuring it out. I suppose flush and drain....should be interesting.

[NLOVNIT]

To answer your question: No

Lori-