Frozen windshield wiper fluid
When it gets to the single digits, and even teens, my windshield wiper fluid freezes up. I bought a new bottle of it and kept it on a covered porch, and its frozen solid too, with single digits for a couple days. That stuff shouldn't freeze though, right?
I've seen stuff out there that says "deicer windshield wiper fluid", but I think its alot more toxic than just the wiper fluid, and I have concerns over animals getting to it.
Is there a way to defrost the stuff that's in my car without having to drive it for 50 miles before it heats up?
Also....the new stuff that froze in the bottle, does that mean its defective (too diluted)?
Does windshield wiper fluid lose its ability to withstand freezing, the older it is? Thanks for your help.