2011 Subaru Outback Owner's Manual - Page 378

11-42 Maintenance and service Aluminum wheels Aluminum wheels can be scratched and damaged easily. Handle them carefully to maintain their appearance, performance, and safety. . When any of the wheels is removed and replaced for tire rotation or to change a flat, always check the tightness of the wheel nuts after driving approximately 600 miles (1,000 km). If any nut is loose, tighten it to the specified torque. . Never apply oil to the threaded parts, wheel nuts, or tapered surface of the wheel. . Never let the wheel rub against sharp protrusions or curbs. . When wheel nuts, balance weights, or the center cap is replaced, be sure to replace them with genuine SUBARU parts designed for aluminum wheels. Windshield washer fluid CAUTION Never use engine coolant as washer fluid because it could cause paint damage. If you spray washer fluid on the windshield but the windshield washer fluid warning light illuminates or the supply of washer fluid runs out, add washer fluid in the tank. Remove the washer tank filler cap, then add fluid until it reaches the "FULL" mark on the tank. Use windshield washer fluid. If windshield washer fluid is unavailable use clean water.