What Needs to Be Replaced in a 90,000-Kilometer Car Maintenance?
3 Answers
In a 90,000-kilometer car maintenance, you need to replace the spark plugs, fuel filter, and air and cabin air filters. Here is some information about car maintenance: 1. Car maintenance: It refers to the preventive work of regularly inspecting, cleaning, replenishing, lubricating, adjusting, or replacing certain parts of the car. 2. Purpose: To keep the car clean and in good technical condition, eliminate potential hazards, prevent failures, and extend its service life. 3. Categories: Minor maintenance and major maintenance. Minor maintenance generally refers to the routine maintenance tasks performed at the intervals or mileage specified by the manufacturer to ensure vehicle performance. It mainly includes changing the engine oil and oil filter. Major maintenance refers to the routine maintenance performed at the intervals or mileage specified by the manufacturer, which includes replacing the engine oil, oil filter, air filter, and fuel filter.
When reaching this mileage, a thorough inspection is essential. Apart from the mandatory oil and oil filter change, the transmission fluid should also be replaced, as automatic transmission cars are most prone to jerking at this stage. Brake fluid should be replaced if its water content exceeds 3%. Spark plugs need to be removed to check the electrode gap; typically, platinum plugs won't last beyond 100,000 kilometers. Don't overlook the chassis components—last time, I found the lower control arm bushings cracked and the steering gear slightly leaking oil. If the tires are worn down to the safety indicators, they must be replaced. Remember to have the mechanic measure the brake pad thickness; anything below 3 millimeters is dangerous. Lastly, don't forget to replace the fuel filter, as clogged fuel lines can severely damage the injectors.
Just completed the 90,000 km service last week, with the focus on system updates and fluid replacements. Using fully synthetic 5W-30 engine oil is the safest choice, and both the air filter and cabin air filter must be replaced—musty odors when the AC is on are often due to this issue. Coolant freeze point should be tested, and the factory coolant should be replaced after five years. The most commonly overlooked items are the differential oil and rear axle gear oil, especially for 4WD vehicles. Have the mechanic inspect cylinder carbon buildup with a borescope—direct injection engines are recommended for walnut blasting cleaning. Pay special attention to rubber components like ball joints and bushings; worn-out parts can cause noise when going over speed bumps.
