Blades work hard in the winter under tough circumstances. Replace wiper blades if they do not clear the windshield in a single swipe without streaking. Where appropriate, consider the use of winter blades that offer improved performance in snow and ice conditions. Always fill the windshield washer reservoir with all-weather fluid to prevent freeze up. And since windshields can quickly get too dirty to see through in winter slush, and mud, keep extra fluid in the trunk.