My winter washer fluid is rated to minus 45 degrees Celsius. So

You can buy winter washing fluid that says it’s good for up to minus 49 degrees Celsius, and that doesn’t mean it won’t freeze on a cold windshield when it’s minus 15 degrees Celsius

Turbo Power 3.78-L -40°C All Season Windshield Washer Fluid 15-204H52

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My winter washer fluid is rated to minus 45 degrees Celsius. So why is it freezing on my windshield? - The Globe and Mail

6 Pack Peak PWN0G3 Windshield Washer Fluid With De-Icer Effective To -20 Degrees Fahrenheit 1 Gallon Jug : Automotive

Rain-X -20F 2-In-1 All-Season Washer Fluid

Package Dimensions: 7.5 L x 11.63 H x 4.3 W (inches) Package Weight : 8.18 pounds Country of Origin : United States Part number: AS250

Prestone AS250 De-Icer Windshield Washer Fluid - 1 Gallon

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