2004 Subaru Impreza Owner's Manual - Page 439
2004 Subaru Impreza Manual
Page 439 highlights
Maintenance and service Windshield washer fluid UGB514BA The tank is located on the right-hand side of the trunk. HGB056IA NOTE " Use only pure water for refilling. " In cold weather (when you do not use the intercooler water spray), keep the tank half-empty in case the water freezes. A larger amount of water could break the tank if it froze. Check the level of the washer fluid at each fuel stop. If the level is low, fill the fluid up to the neck of the reservoir. Use windshield washer fluid. If windshield washer fluid is unavailable use clean water. In areas where water freezes in winter, use an antifreeze 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 below. 11-54
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