Car air filters, also known as air filter elements, are a kind of filter, mainly used for air filtration of automobile engines. The engine takes in a large amount of air during its operation. If the air is not filtered, the dust suspended in the air will be sucked into the cylinder, which will accelerate the wear of the piston group and the cylinder. Larger particles enter between the piston and the cylinder, which will cause serious "squeeze the cylinder", which is especially serious in the dry and sandy working environment. The air filter is installed in front of the carburetor or the intake pipe to filter out dust and sand particles in the air to ensure sufficient and clean air entering the cylinder.
As for the replacement cycle of the air filter, each OEM is different, but generally most of the cars under the same OEM have the same replacement cycle. For example, Toyota RAV4 and Corolla are both launched by FAW Toyota. The shortest replacement cycle is required to be replaced every 10,000 kilometers. Most OEMs’ air filter replacement cycle is every 20,000 kilometers, and there are very few such as Toyota, which only needs to be replaced every 40,000 kilometers.
It is said that it is a bit too frequent to replace every 10,000 kilometers, and it feels a bit ripped off. In fact, the engine is not that fragile. It’s okay if you want to strictly follow the maintenance manual. If you don’t want to change it too frequently, I don’t think it will have much impact on the car if you change it every 20,000 kilometers.
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