Subaru WRX & WRX STI Manuals 2014 Impreza WRX & WRX STI Owner's Manual | Page 353

11-32 Maintenance and service/Replacement of wiper blades level gauge or the “FULL” mark on the tank. Use windshield washer fluid. If windshield washer fluid is unavailable use clean water. In areas where water freezes in winter, use an anti-freeze type windshield washer fluid. SUBARU Windshield Washer Fluid contains 58.5% methyl alcohol and 41.5% surfactant, by volume. Its freezing temperature varies according to how much it is diluted, as indicated in the following table. Washer Fluid Concentration Freezing Temperature 30% 10.48F (−128C) 50% −48F (−208C) 100% −498F (−458C) CAUTION Never use engine coolant as washer fluid because it could cause paint damage. In order to prevent freezing of washer fluid, check the freezing temperatures