I winterized with super tech rv and marine intifreeze in early oct. And today went out to camper just to check on it and noticed the little bit of antifreeze that was left in the toilet like instructi...
Slushing is normal and can be expected depending on how cold it gets.
The difference between RV "antifreeze" and plain water is in the EXPANSION.
RV antifreeze has a very low expansion ratio..
The expansion is what really does the damage to water lines and fixtures and controlling the amount of expansion goes a long way in preventing pipes from splitting..