What items need to be maintained for 30 thousand kilometers?

The 30,000-kilometer maintenance project of the automobile includes oil replacement, oil filter, air filter, fuel filter and throttle cleaning. It needs a comprehensive inspection of the car. The following details are introduced: 1, car maintenance is 30,000 kilometers, and engine oil and engine oil filter must be replaced. Because the engine works for a long time, under the harsh environment of high temperature and high pressure in the engine, the shelf life of the engine oil will be shortened, the performance of the engine oil will be greatly reduced, and the engine cannot be protected for a long time. 2. The function of the oil filter element is to prevent impurities produced by the engine from being mixed into the oil, which is easy to cause the oil to produce colloid and sludge to block the oil circuit. When changing the oil, it is also necessary to change the oil filter element. 3. The air filter should be replaced every 1- 1.5 thousand kilometers, and the fuel filter should be replaced every 30 thousand kilometers. Don't clean the throttle before 30,000 kilometers, and you must clean the throttle after 30,000 kilometers of maintenance, because carbon deposits will be generated at the throttle, and the car is prone to unstable idle speed.