What is the use of PM2.5 in Corolla?

[MicahDella]

The PM2.5 filter in the car is used to filter PM2.5 particles in the air. PM2.5 refers to particulate matter in the atmosphere with a diameter of less than or equal to 2.5 microns (2.5 microns is less than 1/20th the thickness of a human hair). These particles can be inhaled into the lungs and pose significant harm to human health, especially for sensitive individuals. Below are some maintenance items: 1. Engine oil and oil filter: Primarily for the maintenance of the lubrication system. The main function of the lubrication system is to effectively lubricate various components of the car engine to prevent excessive wear. The oil filter removes various impurities from the oil to ensure the normal operation of the lubrication system. The oil filter should be replaced along with the engine oil during an oil change. 2. Air filter: The air filter functions to filter the air before it enters the cylinders, removing impurities, dust, sand, and other foreign particles. The cleaning and maintenance of the air filter depend on the usage environment. The gasoline filter is usually replaced after driving 20,000-25,000 km. 3. Spark plugs: Spark plugs are consumable parts and should be replaced every 20,000 km.