What are the items included in a major car maintenance service?

[MacCaden]

Major car maintenance items include changing the engine oil, oil filter, air filter, and fuel filter. Major maintenance is based on the existence of minor maintenance, and these two types of maintenance are usually performed alternately. The oil filter is typically replaced every 8,000 km or once a year. In dry climates, it should be replaced every 5,000 km. The function of the oil filter is to provide clean fuel to the engine, filtering out moisture and impurities from the gasoline, thereby optimizing engine performance and providing the best protection for the engine. A clogged oil filter can obstruct the flow of lubricating oil, leading to poor engine lubrication, increased wear, and even bearing failure.