aqua charge windshield washer ultra concentrate, 1 quart makes 55 gallons finished product sanco industries aqua charge windshield washer ultra concentrate. methanol free, simply dye and cleaning solution! add methanol for a freezing point of -20°f, normal freezing point of aqua charge is 32°f (13 gallons of methanol per 55 gallon mixture). trusted since 1991. note: this is not a ready to use. this is ultra concentrated, designed to make 55 gallons of finished product.