Here you had better put in the winter windshield cleaner. Cold enough here it would freeze with just water.
Does your winter mix ever freeze? 😆
Bastid!
It gets close here, Labeled for -20F, and I've seen -25F.
But nothing like where you are.
I've never filled the reservoir, but I did spray the windshield with some Dawn Degreaser instead of the spray bottle of windshield fluid I keep handy.
OOPS! Really soapy windshield and it took two or three times with the correct stuff to get the majority off.
There was no grease left on it though, had there been any!