M GO BLUE wrote:
(Save the comments on whether it is better to use RV antifreeze VS blowing out the lines...I don't need them)
I have some old, probably 3-6 years old, of UNOPENED RV antifreeze that has never been used...I'm assuming it would still be OK to use this stuff now?
I put the year I purchase mine with a magic marker and the old stuff gets dumped in the black/gray tank after I drain them after I winterize the lines. I buy fresh for the lines/sink traps.
As far as blowing out the lines I would not feel confident that I got ALL the water out if there happen to be low places in the lines. That may work but I don't relish the idea of trying to find a burst water line that is buried somewhere in the wall/floor.