Windshield Fluid Technology The Nation’s Exclusive provider of Rain-X© Windshield Washer Fluid Highline Warren is the #1 Manufacturer of Windshield Wash Products in the USA! Rain-X ’s windshield fluid technology. All Season Windshield Wash De-Icer Windshield Wash Bug Remover Windshield Wash Windshield Wash Booster Windshield Wash De-Icer Treatments Rainx.com Click for more information on Rain-X RainX® Windshield Washer Fluid is formulated with advanced technology for streak-free cleaning power. The washer fluid applies water beading technology to your windshield for greater driving visibility.