Properly function windshield wiper blades are vital to driving safely in poor weather conditions. Signs of worn windshield wiper blades could be streaking, chattering, torn or split rubber ends. Due to the extreme temperature, acid rain and ultra violet rays it is recommended to replace windshield wiper blades annually. Spokane Quick Lube sells quality brand wiper blades that are designed to provide a quiet streak-free operation in any weather condition.