What are the three filters in maintenance?
2 Answers
Three filters refer to: oil filter, air filter, and fuel filter. These three filters play a crucial role in filtering air, oil, and fuel for the car engine, thereby protecting the engine. Below are the relevant details: 1. Air Filter: Ensures clean air enters the engine. The air contains suspended dust, mainly composed of silicon dioxide, which is harder than metal. Installing an air filter reduces wear on components such as cylinders, pistons, and piston rings. Without it, cylinder wear increases by 7 times, piston wear by 3 times, and piston ring wear by 8 times. Therefore, modern car engines are equipped with air filters near the carburetor (or the intake control device of fuel-injected engines). 2. Fuel Filter: Ensures clean fuel and prevents vapor lock. During storage, transportation, and refueling, fuel can inevitably mix with impurities and water. These impurities, when carried into the fuel supply system and engine cylinders, accelerate cylinder wear. Before fuel enters the fuel pump, it must be filtered to ensure the proper functioning of the fuel supply system. 3. Oil Filter: Filters engine oil to ensure smooth engine operation and is the most important among the three filters. During the use of internal combustion engines, mechanical impurities such as dust, metal shavings, and carbon deposits continuously mix into the oil. Additionally, oxidation caused by air and combustion exhaust gases gradually forms sludge in the oil. This not only accelerates wear on moving parts but also easily clogs oil passages. To ensure oil cleanliness, engines are equipped with oil filters in the lubrication system.
Having driven for over a decade, I believe one of the key aspects of maintenance is the three filters—the oil filter, air filter, and fuel filter. The oil filter is replaced during an oil change, filtering out metal shavings and other impurities in the oil to protect the engine internals. The air filter blocks dust from entering, ensuring the engine breathes smoothly, and I noticed a clear boost in power after replacing it. The fuel filter cleans out debris in the gasoline, preventing clogged fuel injectors. Regularly replacing these can save fuel, extend engine life, and avoid the high costs of unexpected repairs. Just follow the recommended intervals in the maintenance manual—usually checking every 5,000 to 10,000 miles—it's simple and hassle-free.
