Rain-X 2-in-1 All-Season Washer Fluid helps you to keep your car clean. It's designed to give you consistent performance all year long, even in winter. Rain-X All-Season Washer Fluid is effective at getting bugs, dirt and even ice off of your vehicle. It works in temperatures as low as -25 degrees F. The double-acting formula not only cleans the windshield, but it also applies a treatment to the glass so water beads up and flies away.