How often should the air filter be replaced?
2 Answers
Car air filters should be replaced every 15,000 kilometers or approximately once a year. The specific replacement interval depends on the vehicle's usage and driving environment. If frequently driven in dusty or heavily polluted areas (e.g., severe haze), the replacement cycle should be shortened to around 10,000 kilometers. The steps to replace the air filter are: 1. Open the hood and locate the air filter housing, typically positioned beside the engine with connected pipes; 2. Remove the housing cover and take out the old filter; 3. Clean the filter housing, install the new filter, and securely close the housing cover. The air filter is a device designed to remove particulate impurities from the air, characterized by high filtration efficiency, low airflow resistance, and extended continuous operation without maintenance.
As a long-haul truck driver for over a decade, I've learned that air filter replacement really depends on road conditions. Normally, it should be changed every 15,000 to 20,000 kilometers. But if you frequently drive on rural construction sites or desert roads with heavy dust, it's best to inspect it every 5,000 kilometers. DIY replacement is simple: open the filter housing under the hood, pull out the filter and check if the surface is clogged with dust; if it's black or blocked, replace it immediately. Delaying replacement restricts engine airflow, reduces power, and increases fuel consumption – I once experienced a sudden 10% fuel consumption spike. A new filter costs just tens of yuan, much cheaper than engine repairs. Make it a habit to check monthly – your vehicle will run smoother and safer.
