
Major car maintenance involves replacing the engine oil, oil filter, air filter, and fuel filter. Below is an introduction to some car maintenance items: 1. Oil Filter: Typically replaced every 8,000 km or once a year. The oil filter provides clean fuel to the engine, filtering out water and impurities from the gasoline. A clogged oil filter can obstruct the flow of lubricating oil, leading to poor engine lubrication, increased wear, and even bearing failure. 2. Air Filter: The engine draws in a large amount of air during operation. If the air is not filtered, dust can accelerate wear on the piston group and cylinders. The air filter removes dust and particles from the air, ensuring sufficient and clean air enters the cylinders. 3. Fuel Filter: The fuel filter provides clean fuel to the engine, filtering out water and impurities from the gasoline. During car maintenance, technicians also perform inspections, cleaning, tire alignment checks, and checks on various fastening components.

I've been driving for almost 15 years, and I really need to explain major maintenance in detail. It's usually done every 20,000 to 40,000 kilometers or every two years, and it's more comprehensive than minor maintenance. Key tasks include changing the engine oil and oil filter, which is basic but essential; the air filter must also be replaced, as dust buildup can affect fuel efficiency; the fuel filter should be renewed to keep the fuel system clean; replacing spark plugs is crucial—if they're worn out, ignition becomes unstable. The braking system requires a thorough inspection, including brake pad thickness and brake fluid condition; tires need rotation and balancing to prevent uneven wear. Additionally, coolant and brake fluid levels should be checked, and chassis bolts must be tightened to prevent loosening. The cabin air filter and transmission fluid (for automatic transmissions) should also be inspected. This significantly extends engine life and prevents sudden breakdowns. I always stick to this routine—my car runs smoothly and reliably. The cost isn't too high, but the benefits are substantial.

As a new car owner, I experienced my first major maintenance service last year, and it turned out to be far more than just an oil change. The comprehensive service included basic engine oil and filter replacement, with the air filter also being replaced simultaneously to prevent restricted airflow; spark plugs were renewed if worn out; the fuel filter was replaced to avoid fuel line blockages; tires were inspected and rotated to prevent uneven wear; the braking system underwent thorough inspection, including brake pad thickness and brake fluid level checks; plus coolant level verification and suspension system bolt tightening. Attention was also given to peripheral items like lighting and battery health. After completing the full maintenance routine, the car ran as smoothly and efficiently as if reborn. I recommend adhering to the manual's schedule without delay—it saves on future repair costs.

Car maintenance has been around for years, but the core of major service remains unchanged: changing oil and filters to maintain lubrication; replacing air and fuel filters to prevent contamination; updating spark plugs for optimal ignition; inspecting brake pads and brake fluid to ensure stopping power; rotating and balancing tires to extend their lifespan; verifying the cooling system including antifreeze; and adjusting transmission fluid. Addressing these promptly boosts engine efficiency and makes driving smoother.


