"Eisboch" wrote in message
. ..



All the above. The answer is blowing in the wind. Actually, it's because
the windshield is cold enough to selectively freeze the H20 content of the
"antifreeze". If you notice ... the wind does not even have to be blowing
in order to freeze a film on the windshield if you use the fluid and
wipers before the defroster starts to warm up the windshield.

I am focusing on wind chill because in your original post you confused
wind chill as being a factor of the temperature of a non-living object.
It isn't.

Eisboch


Actually, I think what I just said is incorrect. The freezing film you see
develop is water vapor in the air condensing and freezing on the cold
windshield. If you notice, the next squirt of washer fluid melts it, then
it occurs again and again until the windshield warms up.

Eisboch