bl/gr tanks in winter

[lefoster]

ok, what do y'all do with your black and gray tanks when trailer is stored for the winter:
1 - empty/flush/leave empty
2 - empty/flush/put in some water and a deo/clean pod
3 - other

[bill777x]

When I winterize I leave both dump valves open the entire time so all the water I push out of the plumbing with the pink stuff can exit. My trailer is tall enough for a five gallon bucket to fit under the outlet pipe and there's never more than that in the fresh side of the system. After that I leave the tanks dry for the winter and then when I sanitize in the spring I toss some chemical in the black tank and go. Long story short, 1.

[Jagiven]

I try to drain the tanks throughly at my last dump. If I cannot, I place a 5 gallon bucket under the drain. Open the black tank valve and let it drain. It might only be a gallon. I'll let the grey water tank drain on to the grass. After blowing out my water lines. I close the valves. Let any rv antifreeze sit in the tanks all winter.

In reality if there is a small amount of water in the tank (not pipes) it will do no harm, as the surface area on the tank is so large, the frozen water cannot break anything.

[RetiredOne]

Flush, empty, close valves, pour in antifreeze so it reaches the valves.

[lefoster]

Thanks y'all! I appreciate your responses!