What Causes Blurriness on the Outside of the Windshield?
2 Answers
Blurriness on the outside of the windshield can be caused by the following reasons: 1. Dust: Since cars are often driven outdoors, and many parking lots are open-air, it's common for dust to accumulate on the windshield. 2. Spots: Rain can sometimes leave spots on the windshield. Regular cleaning is usually sufficient to address this issue. 3. Glass Rust: If there is glass rust, the situation can be more troublesome. 4. Oil Film: Many car owners wonder why an oil film forms. In reality, it's caused by black exhaust emissions from the vehicle in front. If you're driving too close, these emissions can adhere to the windshield and form an oil film. This film can blur the windshield and, if severe, impair visibility.
I remember when I was young and driving, the blurriness on the outside of the windshield was a common issue. It was mostly due to aged wiper blades failing to remove mud and dirt, road dust and insect remains sticking to the glass forming a greasy film, and worsened by urban air pollution. If the problem persisted after washing the car, I’d check if the wiper angle was correct or try using professional glass cleaner for a thorough scrub. Don’t slack off—blurry vision increases the risk of accidents, especially in rainy conditions. I recommend cleaning the wiper blades monthly to prevent hardening, or spraying some degreasing foam and manually polishing the glass before driving. Clear visibility brings peace of mind while driving, and this habit has saved me from several dangerous situations.
