Why does the newly replaced wiper blade leave water streaks and not clean properly?

[SabrinaFitz]

Newly replaced wiper blades may not clean properly and leave water streaks due to oil film on the windshield or mismatched wiper blades. Here are the detailed explanations: Oil film on the windshield: When a vehicle is exposed to the natural environment, the fine pores on the glass can enlarge over time, absorbing exhaust fumes and oil mist from the air to form an oil film. Simply relying on wiper blades and windshield washer fluid is not enough to remove the oil film; a dedicated oil film cleaner must be used. Mismatched wiper blades: If the wiper blades do not match, they may not fully adhere to the glass. Refer to the vehicle manual to confirm the correct wiper blade model. Also, check whether the connection method between the wiper arm and the blade is compatible.