Why Do New Cars Have Oil Film?
2 Answers
.Wiper blade aging, and the exhaust gas emitted by vehicles ahead contains a certain amount of oil smoke. Below is an introduction to oil film: Introduction: Oil film forms during driving when some impurities and oil smoke from vehicle exhaust in the air enter these pores, gradually accumulating over time. Causes: If a vehicle is frequently parked under trees, corrosive substances such as tree resin, fruit pulp, bird droppings, and insect remains will adhere to the front windshield, corroding the glass and forming an oil film. Environmental pollution from parking areas also plays a role; vehicles parked for long periods near hotel or restaurant kitchens may have oil smoke from the kitchens adhering to the glass.
It's really annoying to find oil film on the windshield of a brand-new car just after taking delivery. Over the years of running my auto repair shop, I've found that oil film on new cars mainly comes from two sources: First, unburned oil particles from truck exhaust during transportation stick to the glass, especially the black soot emitted by large trucks on highways, which gets blown onto the windshield by the wind. Second, the protective wax sprayed on the car before leaving the factory wasn't cleaned off properly, and it melts under the sun to form an oily layer. The solution is simple—don't use ordinary glass cleaner. Instead, buy a specialized oil film remover and scrub with a nano sponge. Adding a couple of drops of dish soap to the windshield washer reservoir can help prevent oil film buildup, but remember to use it no more than once a month, as excessive use can accelerate wiper blade deterioration.
