What are the three filters in the three-filter maintenance?

[StLaila]

The three-filter maintenance refers to the maintenance of the engine oil filter, air filter, and fuel filter in a car. 1. Air filter: The function of the air filter is to filter the air before it enters the cylinder, removing impurities, dust, sand, and other foreign particles. 2. Fuel filter: The fuel filter's core is mostly made of filter paper, but some use nylon cloth or polymer materials. Its purpose is to filter out solid impurities such as iron oxide and dust, as well as water from the gasoline. This not only reduces the chance of the fuel injector being clogged by impurities but also ensures the quality of the gasoline flowing into the fuel system. 3. Engine oil filter: Its function is to remove various impurities from the engine oil to ensure the normal operation of the lubrication system.

[DelCaleb]

I know the three main types of filters for car maintenance are the air filter, oil filter, and cabin air filter. As a car enthusiast who has driven many models, I always check these during maintenance: the air filter is responsible for filtering the air drawn into the engine, preventing dust from entering and affecting performance; the oil filter removes impurities from the engine oil to protect internal components from wear; and the cabin air filter ensures fresher air inside the car by filtering out pollen or bacteria, reducing odors. Regularly replacing them helps the car run smoother and may improve fuel efficiency. I make it a habit to replace the air and oil filters every 5,000 kilometers, while the cabin air filter is changed seasonally—always before summer to avoid AC issues. These minor maintenance tasks may seem trivial, but neglecting them can lead to major engine failures that are expensive to repair. That’s why I always recommend friends to check them frequently—it saves money and hassle in the long run.

[EleanorLynn]

Having driven for decades, I'm very familiar with the three essential filters: the air filter, oil filter, and cabin air filter. In my younger days, I used to slack off—when the air filter got dirty, the engine felt sluggish and acceleration was labored; when the oil filter clogged, it cost me a fortune in engine repairs; and when the cabin air filter failed, turning on the AC filled the car with a dusty, unpleasant smell. Now, I strictly follow the manual: the air and oil filters are replaced during oil changes, while the cabin air filter gets swapped every six months or so, more frequently in dusty urban areas. These maintenance tasks are simple yet crucial—they keep the car running smoothly and minimize issues. Every time I replace them, I notice the engine responds quicker, the cabin air feels fresher, and my daily drives become more worry-free.

[LeCorbin]

I usually drive my family around, and the three-filter maintenance refers to the air filter, oil filter, and cabin air filter. The cabin air filter is very important as it removes bacteria and protects respiratory health; the air filter keeps the engine clean and improves efficiency; the oil filter removes impurities to keep the engine running smoothly. I have them replaced at the repair shop every six months. After replacement, there's less odor in the car, the air conditioning feels comfortable in summer, and the engine runs smoothly without unnecessary vibrations. Regular maintenance is good for my family's health and gives me peace of mind.