What needs to be done for the third car maintenance?

2 Answers
Edwin
07/29/25 2:18am
Regular items for the third car maintenance include changing the engine oil, oil filter, air filter, cabin air filter, spark plugs, etc. Some brand manufacturers may add additional maintenance items. The reason for this depends on the service life of car parts. Some parts have a shorter service life and are prone to getting dirty, so they need to be replaced frequently. Other parts have a longer service life and a longer replacement cycle. The specific details are as follows: 1. Engine oil change: Under the harsh conditions of high temperature and high pressure in the engine, the shelf life of engine oil is greatly shortened, its performance significantly declines, and it loses its protective effect on the engine. The replacement cycle for mineral oil is about 5,000 kilometers; for synthetic oil, it's about 10,000 kilometers. 2. Oil filter replacement: To ensure the cleanliness of the oil circuit, the engine is equipped with an oil filter in the lubrication system to prevent impurities from mixing into the oil, causing oxidation and producing sludge that can block the oil circuit. The replacement cycle for the oil filter is the same as for the engine oil, and it must be replaced simultaneously with the oil. 3. Air filter replacement: The air filter prevents dust and particles from being sucked into the engine during the 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 filter should be cleaned every 5,000 kilometers by blowing it clean with an air gun and replaced every 10,000 kilometers.
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MacHeidi
08/12/25 6:16am
When it comes to the third car maintenance, what I care most about is doing the basic upkeep to prevent minor issues from accumulating. Usually at this point, the car has run about 15,000 kilometers, and the most crucial tasks are changing the engine oil and oil filter, as used oil with too many impurities can easily damage the engine. The air filter should also be checked or replaced, as accumulated dust can affect air intake and fuel consumption. Additionally, tire rotation and pressure adjustment are necessary to ensure grip and prevent misalignment. The braking system and fluids like brake oil should also be inspected, as they relate to driving safety. Personally, during every maintenance session, I also ask the mechanic to check the battery and coolant levels, as overheating in summer can easily cause problems. These small steps don’t take much time but can keep the car running smoothly, whereas delaying them could lead to higher repair costs later.
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