Answer (1 of 10): Washer fluid blended for Winter is readily available, if none is available as a stop gap add isopropyl alcohol to the fluid.
Easy-to-measure bottle, just squeeze 1/4 oz. in the dosage reservoir to make 1 gallon of windshield washer fluid. Make it like the factory does,
Qwix Mix Windshield Washer Fluid Concentrate, 1 Bottle Makes 32 Gallons, 1/4 oz. Makes 1 Gallon 100% Biodegradable
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