Prestone De-Icer Winter Windshield Washer Fluid is specially designed to improve winter driving visibility. It is formulated to melt ice & frost fast, down to -34 degrees F. Prestone De-Icer washer fluid works hard to prevent dangerous refreeze, when washer fluid can't handle the extreme temperatures and recoats the windshield with a layer of ice. Road salt and grime from driving during the winter also decrease visibility. Prestone De-Icer washer fluid is formulated to Power Clean the windshield. This product is streak and glare free, along with being safe for rain sensing technology windshields.