RV Anti-Freeze Freezes

JJBIRISH wrote:
A dry system wouldn’t need protected… but I haven’t seen a dry system that was used until winterization and then blown out… yes they had compressed air run through them to empty the bulk water… but they are not dry, and I have repaired more because they thought the system was dry, and it wasn’t, than for any other reason… I have never repaired one the was winterized with the pink stuff when done properly…
As a matter of fact every one that I was told was winterized with air alone already, I was able to blow more water out of the lines a week or a month later… sometimes a significant amount of water ( I know, I hear it all the time, I have done it for years with no problems)…

Sometimes the plumbing is stubbed out for an outside shower or a washer that was never installed, if you look at most RV plumbing installations it’s easy to find one low spot after another… blowing the lines out seldom gets all the water out and works as long as enough of what’s left behind doesn’t pool in one spot or fitting…

Exactly! many people don`t understand gravity and what happens to water inside the lines in a trailer when it moves. everything finds the lowest point! That is why I will always use and recommend RV antifreeze. just to much of a gamble not using it.

BTW, what makes people think the near minimum wage person at Walmart cares about at what point the RV antifreeze freezes?!