Emptying gray tank for winter...on flat ground or hill?

[slackercrust]

My gray tank keeps 1 - 2 gallons of water in it if it is drained on level ground. To get more water out of it, I need to drain it on a steep hill.

I plan to use it off and on for winter. Was planning on drianing gray tank on flat ground and not having to find a hill each time.

Will a couple of gallons water left in gray tank hurt it if it freezes in winter? Or should I drain it on a hill?

[RovinOn]

Just add RV antifreeze to it and you should not have a problem.
When I winterize my motorhome and I purge all faucets with the antifreeze it all goes down into the waste holding tanks and that's where it stays until spring and I've never had a problem

Regards,
RovinOn

[NITEHAWK]

Your dump valve could be damaged if it has water in it or pushing on it when the water freezes. I would add RV antifreeze to the water tank in sufficient quantity to prevent freezing/damage. Other alternative would be to leave dump valve open (not the best idea if you forget to put the drain cap back on).

[rmwaggy]

On level ground, use your leveling jacks on right side to raise that side high enough to drain tank.

[TonyDi]

Slacker just add some anti freeze to the tank and you'll be okay

[Ray,IN]

Quote:

Originally Posted by RovinOn Just add RV antifreeze to it and you should not have a problem. When I winterize my motorhome and I purge all faucets with the antifreeze it all goes down into the waste holding tanks and that's where it stays until spring and I've never had a problem Regards, RovinOn

X2.