Why does the newly replaced wiper blade leave streaks and fail to clean properly?

[Tom]

Newly replaced wiper blades leaving streaks and failing to clean properly are typically caused by oil film on the windshield or mismatched wiper blades. Below are detailed explanations: Oil film on the windshield: When vehicles are exposed to the natural environment, microscopic pores on the glass expand over time, absorbing exhaust fumes and oil mist from the air to form an oil film. This oil film cannot be removed by wiper blades and windshield washer fluid alone; specialized oil film remover must be used. Mismatched wiper blades: Incompatible wiper blades may not fully adhere to the windshield. Refer to your vehicle's manual to confirm the correct wiper blade model. Also check whether the connection method between the wiper arm and blade adapter matches.