somethings not right here

I was running the car in the driveway yesterday and had a big moth on the front of the radiator so I put my hand down in front of the radiator to get it off and I felt air pushing forward out of the radiator. You are supposed to pull air through the radiator, not push it through. Do I have the wrong blade on here. It said it was a standard rotation blade. Its a Derale 17317 blade.

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