The maintenance items for a 20000 km maintenance vehicle include: oil replacement, air filter, air conditioning filter, fuel filter, and oil filter. At the same time, check the condition of the booster oil and brake oil.
The main purpose of a car with a mileage of 20000 kilometers is to replace the engine oil filter, which can lubricate the engine and extend the service life of its mechanical components. The replacement cycle for air and air conditioning filter elements is approximately 10000 kilometers; The air conditioning filter element can provide good air for the personnel in the vehicle, while the air filter element can suck in fresh air for the impurities filtered by the engine, providing good operating conditions for the engine.
Check the aging degree of spark plugs to avoid cold starting difficulties, increased engine fuel consumption, engine running jitters, and jerks caused by spark plug aging.
Check the water content of the brake fluid; Excessive water content in brake fluid can lead to longer braking distances and softer brake foot feel.
Check whether the chassis components are aging and loose. The most common ones are the lateral tie rods, suspenders, planar bearings, and shock absorber buffers. If aging occurs, replace them, which can effectively reduce abnormal chassis noise and increase driving safety.
Check whether the level of antifreeze reaches the lower limit. Lack of antifreeze can lead to an increase in water temperature, which can seriously damage the engine. If the level is low, check whether the antifreeze leaks. If not, add it to the middle line of the upper and lower limits.
Check whether the tire has eccentric wear, bulging, cracking, and air leakage from the binding pin; Eccentric wear can lead to a deviation in the direction of the vehicle during driving, and bulges, cracks, and punctured nails can cause a tire blowout during driving, seriously affecting the safety of personnel inside the vehicle.
To sum up, what a car needs to do after 20000 kilometers is to replace the oil filter and air conditioning filter, and check various safety performance components.