How Many Kilometers Should a Major Car Maintenance Be Performed?

[DiHayden]

Major car maintenance should be performed every 20,000 kilometers. Changing the engine oil and oil filter is a mandatory task for every maintenance. Due to the harsh conditions of high temperature and high pressure inside the engine, the shelf life of engine oil is significantly shortened, and its performance greatly deteriorates. Over time, it fails to protect the engine effectively. The oil filter prevents impurities from mixing into the oil, which can cause oxidation, leading to the formation of sludge and clogging the oil passages. The air cleaner's role is to block dust and particles from being inhaled during the engine's intake process. If the filter is not cleaned for a long time, it can lead to dust being sucked into the engine, causing abnormal wear on the cylinder walls. The air cleaner must also be replaced during major maintenance.