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Question:

Why is windshield wiper fluid blue?

Why is windshield wiper fluid blue?

Answer:

larry is right about that.
And green Yellow. It is the companies choice. You like? Don't drink It. It usually contains more Alcohol then water
all fluids are color added for various reasons. the blue color for wiper fluid is mainly because its a pleasant color to look at when sprayed on your glass but also for recognition of the fluids to an extent.
I don't think there is a specific reasoning for it, it just started off blue so why change it? It's just windshield wiper fluid.

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