What Causes the Formation of Oil Film on Glass?
2 Answers
Automobile exhaust, due to incomplete combustion of gasoline, produces various exhaust pollutants. These pollutants are often trapped on urban roads, especially behind trucks, and inevitably adhere to the car glass, forming an oil film. Another cause is smoke pollution. If the car is frequently parked near restaurant chimneys, over time, a significant amount of smoke residue will accumulate on the glass. Below is relevant information: 1. Oil Film Removal: Oil film cleaners are generally simple to use. Spray them evenly on the car glass, then wipe and rinse with water. Other methods, such as using acidic solvents or deep abrasives, can also be effective. However, these may damage the glass and affect the strength of the windshield, so they are not recommended. 2. Hazards of Oil Film: Firstly, it poses safety risks while driving. During nighttime driving, especially in rainy conditions, oil film on the windows can cause headlights from oncoming vehicles to appear more glaring, creating significant safety hazards. Additionally, it increases the consumption of windshield washer fluid and shortens the lifespan of windshield wipers.
In recent years, I have frequently encountered the issue of oily film on my car's windshield, and I’ve identified several main causes: First, when the car is parked under trees, fallen leaves and tree sap adhere to the glass over time, gradually forming an oily film layer. Second, exhaust emissions from other vehicles on the road, especially unburned carbon particles from diesel vehicles, turn into sticky oil residues on the windshield during rainy days. Even more troublesome is the cheap windshield washer fluid used by car washes, which contains paraffin that leaves oily film traces after drying. Additionally, parking near restaurants allows kitchen fumes to accumulate on the glass surface. These oily films prevent the wipers from cleaning effectively, making driving in the rain particularly hazardous.
