What is the reason for the blockage of the oil filter in the car?

Many people don't understand that the oil filter is located inside the car and there is no dust, so why is the oil filter clogged? The first reason is that the gasoline is not filtered clean, and there are some impurities, which will block the fine oil inlet filter. The second reason is that there are some small cracks inside the car, and a lot of dust enters the inside of the car through these small cracks, and then merges with the gasoline, so the gasoline will be burned clean when the car is driving, but the dust remains. , clogged in the oil filter. The third reason is that some minor accidents occurred during the operation of the car, and these minor accidents caused the essential oil filter to be blocked.