2011 Subaru Outback Owner's Manual - Page 392

Maintenance and service 11-41 Windshield washer fluid CAUTION Never use engine coolant as washer fluid because it could cause paint damage. 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 30% 50% 100% Freezing Temperature 10.48F (−128C) −48F (−208C) −498F (−458C) 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. In order to prevent freezing of washer fluid, check the freezing temperatures in the table above when adjusting the fluid concentration to the outside temperature. If you fill the reservoir tank with a fluid with a different concentration from the one used previously, purge the old fluid from the piping between the reservoir tank and washer nozzles by operating the washer for a certain period of time. Otherwise, if - CONTINUED -