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