How long can a car stay in garage if temps drop below freezing

It’s been a few years since I’ve had dirt bikes and used that water wetter but I’m almost certain it only Lowers the actual water temp. I’m pretty sure it doesn’t offer any antifreeze Benefit. I may be wrong

frankly, never been a big fan of the stuff. Don't have cooling issues, straight water has always worked fine
Just didn't expect this cold couple of days this year, after its already out.