Subaru 2003 Legacy - Manual (Page 420)

11-48
Washer Fluid Concentration Freezing Temperature
30%
50%
100%
10.4
°
F (–12
°
C)
–4
°
F (–20
°
C)
–49
°
F (–45
°
C)
HBB004IA
Replacement of windshield wiper blades
Grease, wax, insects, or other materials on the windshield or the wiper
blade results in jerky wiper operation and streaking on the glass. If you
cannot remove the streaks after operating the windshield washer or if the
wiper operation is jerky, clean the outer surface of the windshield (or rear
window) and the wiper blades using a sponge or soft cloth with a neutral
detergent or mild-abrasive cleaner. After cleaning, rinse the windshield
and wiper blades with clean water. The windshield is clean if beads do
not form when you rinse the windshield with water.
CAUTION
Do not clean the wiper blades with gasoline or a solvent, such as
paint thinner or benzene. This will cause deterioration of the
wiper blades.
If you cannot eliminate the streaking even after following this method,
replace the wiper blades using the following procedures: