Why Doesn't the New Wiper Blade Clean Properly?

[DiLayla]

There are two main reasons why a new wiper blade doesn't clean properly: one is the presence of an oil film on the windshield, and the other is a deformed wiper arm, which prevents the wiper rubber from tightly adhering to the glass. Oil film on the windshield: When a vehicle is exposed to the natural environment, the tiny pores on the glass enlarge over time, absorbing exhaust fumes and oil mist from the air to form an oil film. Simply relying on the wiper blade and windshield washer fluid is insufficient to remove the oil film; a specialized oil film remover must be used. Deformed wiper arm: The motor drives the reduction mechanism to rotate, which in turn causes the wiper arm and blade to swing left and right, cleaning the windshield. If the wiper arm is deformed, the wiper blade cannot press firmly against the windshield, making it unable to remove dirt effectively. In this case, replacing the wiper blade is necessary.