Dr. Bronner's - A simple recipe for windshield wiper fluid using our Castile Liquid Soap: in an empty 1 gallon jug, combine 1 oz. of soap with 8 oz. of isopropyl alcohol,
Windshield Washer Fluid | Make Your Own Windshield Washer Fluid
Rain-X 128 fl. oz. -25°F Degree Universal De-Icer Windshield Washer Fluid 113655 - The Home Depot