What Causes the Persistent Oil Mist on the Inside of the Windshield?

1 Answers
AdrianLee
07/30/25 12:11am
During normal driving, the exhaust emitted by vehicles ahead contains many unburned fuel particles, which settle on the front windshield and over time form an oily film. Here are some related explanations: 1. Dishwashing Liquid: Those who are handy can clean the front windshield area with dishwashing liquid. If cleaning doesn’t resolve the issue, it’s recommended to seek professional help at a car detailing shop. 2. Glass Cleaner: A specialized glass cleaner designed to remove oily films should be used for wiping. Its function is to make it harder for the oily film to adhere to the glass. Before use, it’s best to clean the window first; otherwise, the cleaning effect will be significantly reduced. After the glass cleaner dries, it turns white like wax and can be wiped off with a soft cloth.
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