How to Deal with Oily Haze on the Inside of the Windshield?

[AmaraDella]

You need to purchase a professional windshield grease film remover online. After purchasing, first clean the windshield thoroughly, mainly to remove dust and small particles. Then, apply some clean water to the windshield and use the grease film remover along with a clean, damp towel to wipe back and forth. Continue wiping until there is no more oily residue or haze, then rinse off the foam with clean water and dry the windshield.

[Cheryl]

Last time I went on a long trip, I encountered the same issue - the inside of the windshield seemed covered with an oily film and fogged up, which really stressed me out. Later, I figured out a solution: while driving, blast the heater at maximum setting towards the windshield for a few minutes while pressing the defrost button, and the fog clears up quickly. Regular maintenance is crucial - every two weeks, thoroughly wipe the interior glass with a soft cloth dampened with neutral cleaner, especially the dashboard area where grease tends to accumulate. Remember to follow up with a dry cloth to avoid water streaks. During rainy seasons, always keep anti-fog spray in the car. When washing the car, ask the attendant to focus on removing oily films from the glass. Change the cabin air filter every six months to prevent moist air retention. Sticking to these small habits will basically eliminate fogging problems.

[RiverRose]

I've been bothered by this issue too – foggy and oily windshields are especially dangerous. Now I've learned some emergency measures: turn on the AC and external circulation as soon as you get in the car, adjust all vents to point toward the windshield, and the fog will clear in less than two minutes. The key is to solve the oil film problem. Go to an auto parts store and buy a dedicated oil film remover, then ask the car wash attendant to carefully clean the inside of the windshield during washing. For stubborn stains, use a magic eraser to scrub repeatedly. Avoid smoking in the car regularly, and don't place perfume near the dashboard – these volatiles easily stick to the glass and form oil films. Develop the habit of wiping the small area around the interior rearview mirror before driving to ensure clear visibility.

[SanAngela]

The oily haze on the front windshield is mostly caused by improper air conditioning usage and dust accumulation. From my experience, avoid blasting the AC at maximum cooling immediately after entering the car in summer - the drastic temperature difference causes instant fogging. The correct approach is to first open windows for ventilation, then turn on the AC after the interior temperature drops. Oil stain removal requires special care: never use newspaper or tissues as they leave fibers. Professional microfiber cloths with glass cleaner work best, especially for the driver's direct line of sight area. Also, avoid excessive dashboard waxing as wax vapor can form oily films on the glass.