Holding tanks in cold weather
Should grey and black tanks be completely drained for the winter or do you leave some liquids in them? I have read that the black tank especially should not be allowed to sit totally dry for for long ...
Forum Discussion
When you put the pink stuff RV antifreeze in your into your water lines, enough will flow down the drains into your holding tanks. The real danger with freezing are the water lines since they have limited expansion capability. A holding tank with a little bit of water in it has a whole lot of expansion capability.
