Originally Posted by NDJollyMon
Mine system was full of pink stuff...and so was the filter housing. Temps dropped into the -40F range...and nothing broke.
I think the "pink stuff" is only rated for -20!!
Makes me shiver just thinking about it.......
As far as breaking a water filter canister-- I can see how it might
happen. If the cartridge were removed and it still had
water in the housing, it would be possible to
run a fair amount of antifreeze thru the filter housing without totally
changing out the contents of the canister.
IE. you could wind up with a mixture of pink and water and that could
freeze if it got cold enough.
We used a separate filter at the hose inlet all season.
I have to take a bunch of stuff out of my "basement" and crawl in
there to access the filter so I took off the lines and connected them
together with a plastic coupling permanently bypassing my inside
filter. If a future owner wants to re-connect it, they can do it easily.