It will certainly freeze, even the stuff rated at -20F. A couple of winters ago here where it was a high of about 15F for the week, my wife had issues with the rear washer jet in her SUV. It wouldn't work after the car sat and cooled off, but would after driving and the heat warmed things up. It was freezing in the lines just enough to keep it from working, but didn't break anything.Washer fluid does not freeze. Just a long way to send it.
I don't doubt you. Here up north we use -50 to -100 and have never had an issue with it freezing on any of our vehicles. My wife's Explorer has never had an issue and we have had -26 and colder this past winter.It will certainly freeze, even the stuff rated at -20F. A couple of winters ago here where it was a high of about 15F for the week, my wife had issues with the rear washer jet in her SUV. It wouldn't work after the car sat and cooled off, but would after driving and the heat warmed things up. It was freezing in the lines just enough to keep it from working, but didn't break anything.
Great idea!I tend to use the -35 stuff and add isopropyl alcohol to it. Not only does it not freeze up, but it also works quite well as a defrosting agent then.
Does tend to smell a little inside if you mix it too strong.