How Often Should Car Filters Be Replaced?
2 Answers
Car filters should be replaced at the following intervals: 1. Oil filter: generally every 5,000 to 8,000 kilometers; 2. Fuel filter: generally every 10,000 to 20,000 kilometers; 3. Air filter: generally every 10,000 to 20,000 kilometers; 4. Cabin air filter: generally every 20,000 kilometers. There are four main filters in a car: the oil filter, fuel filter, air filter, and cabin air filter. Taking the oil filter as an example, it is installed in the oil passage. During circulation, the oil first passes through the filter to remove impurities before flowing to various lubrication points. This filtration process helps to better lubricate component surfaces and reduce friction. The lifespan of an oil filter depends on factors such as the material of the filter paper, filtration area, and strength. Higher-quality filter paper and a larger filtration area contribute to a longer lifespan. Typically, an oil filter lasts between 5,000 to 8,000 kilometers, but this should be determined based on the filter's quality, driving habits, vehicle wear conditions, and oil quality.
Having driven for nearly ten years, I've found that the replacement frequency of the cabin air filter and engine air filter significantly impacts driving comfort. If the cabin air filter isn't changed, during summer when the AC is on, the airflow feels weak, the car gets stuffy with a musty smell, and prolonged exposure to poor air quality may lead to respiratory issues. I typically check it every 10,000 to 20,000 kilometers or replace it at least once a year—especially in dusty areas like rural or industrial zones, where I increase the frequency to every six months. A dirty engine air filter affects engine airflow and fuel consumption, increasing wear risks. Based on my experience, replacing it around every 15,000 kilometers works best. In practice, I adjust by observing the filter's darkening color or consulting the maintenance manual. Developing a habit of regular replacements makes driving smoother and ensures peace of mind on long trips.
