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You can find out for sure by tuft-testing it with some string tied on the wiper arm. Also, if/when you put it back to the normal position you can test to see if it's even seeing direct airflow. I was surprised to find that mine are shielded, even though they look exposed.
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11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles
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