Many car owners only focus on the quality of the engine oil during maintenance, but often overlook the small size of the oil filter, unaware that it is the core component of the engine lubrication system, known as the "kidney" and "cleaner" of the engine.

Oil filter, abbreviated as oil filter, is mainly installed in the engine lubricating oil circuit, responsible for filtering various impurities in the circulating oil throughout the process. It is a key component to protect the precision parts of the engine and extend the service life of the vehicle. When the engine continues to run, metal components such as pistons, crankshafts, and camshafts rub at high speeds, producing fine metal debris. At the same time, if the engine oil is exposed to high temperature and pressure for a long time, it will gradually oxidize and deteriorate, producing gum, sludge, and carbon deposits. External dust and water vapor will also infiltrate the oil circuit. If these impurities continue to follow the oil circulation, they will directly wear down the internal precision structure of the engine and exacerbate the aging of parts. High quality engine oil filters physically intercept various harmful impurities through high-density filter materials, continuously purify the engine oil, ensure clean and transparent circulation of engine oil, and enable the engine oil to stably perform its five core functions of lubrication, cooling, sealing, rust prevention, and shock absorption.

Many old engines have problems such as abnormal noise, power degradation, and oil burning, which are caused by long-term neglect of filter replacement and continuous wear of internal parts due to impurities. Although the small filter may not be eye-catching, it controls the health lifeline of the engine and is an essential core component for every maintenance. The replacement step cannot be omitted.