40,000-Mile Vehicle Service Items

The maintenance items for a car at 40,000 miles include:

1. Inspection of engine, chassis, and gearbox;
2. Cleaning of engine and throttle body;
3. Cleaning of air conditioning system;
4. Replacement of brake fluid, antifreeze, and transmission fluid;
5. Checking of air filter and cabin air filter;
6. Replacement of engine oil, oil filter, and spark plugs;
7. Inspection of wheel hubs and braking system.
8. Engine Oil and Oil Filter: For vehicles reaching 40,000 miles, engine oil must be replaced. Engine oil plays a crucial role in lubrication, friction reduction, cooling, and cleaning during engine operation.
9. Air Filter: The air filter serves as a core filtration component for the engine, trapping all dust and debris. A dirty air filter can impede engine airflow, potentially leading to reduced engine performance. Therefore, replacement is necessary.
10. Brake Fluid: Replace every two years or 40,000 miles. Prolonged use can increase moisture content in brake fluid. Under heavy braking, the fluid may overheat, causing water to vaporise and create air pockets in the braking system. This can lead to brake failure, making regular replacement essential.
11. Manual Transmission Fluid: Replace every 40,000 miles. For automatic transmissions, replace every 60,000 miles.
12. Brake Pads and Tyres: Check the thickness of brake pads and the wear level of tyres. Replacement is mandatory if required, as these are critical to road safety.