What Needs to Be Replaced in a 90,000-Kilometer Car Maintenance?

[DelStephen]

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.

[MakaylaRose]

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.

[Alan]

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.

[LucilleFitz]

Based on my experience, maintenance should be categorized into three types: The first category is consumable parts, where wiper blades and brake pads should be replaced as a priority. The second category is fluids, where transmission oil must be replaced according to the manual's specified standards. The third category is inspection items, where it's best to perform a four-wheel alignment and check the moisture content in the brake fluid. Pay attention to cracks in the belt, and even timing chain vehicles should have their tensioners inspected. For batteries older than three years, it's advisable to test the CCA value to prevent sudden failures. Check brake discs for grooves; if they've been resurfaced more than three times, they should be replaced. Adding a bottle of fuel additive to clean the fuel system is also essential.

[VanElle]

A seasoned driver with nine years of experience tells you not to be fooled by the dealership into getting a full service package. Must-do items: replace the three filters, transmission fluid, and brake fluid, and inspect the generator belt and ignition coils. Pay special attention to the front and rear suspension bushings—many cars develop knocking sounds at this stage. It's recommended to clean the throttle body and intake manifold; you can buy cleaner online for just a few dozen bucks and do it yourself. The electronic power steering system needs to be reset and recalibrated, or the steering will feel heavier. The air conditioning system requires deep sterilization, especially the evaporator core, which is prone to mold. Finally, remember to top up the spare tire pressure—it could be a lifesaver in an emergency.

[Iris]

Follow my maintenance checklist: Core component inspections include engine mount cushions, CV joint boots, and ABS sensor wiring harnesses. For fluids, it's mandatory to replace the engine oil, oil filter, and transmission fluid. For 4WD vehicles, transfer case fluid must also be changed. Remove spark plugs and measure the gap with a feeler gauge; replace if exceeding 1.1mm. Check tire manufacturing dates and replace those older than six years, then perform wheel balancing to prevent uneven wear. Recommend having the repair shop use a diagnostic tool to read transmission data streams and check clutch wear values. Finally, update the ECU software, as many manufacturers release new versions after 80,000 km to optimize fuel consumption.