What are the essential items for a major car maintenance?

[StephenFitz]

Essential major maintenance items: 1. Brake fluid must be replaced. Unlike other fluids, brake fluid is hygroscopic. When it absorbs a certain amount of moisture, it can cause vapor lock in the braking system, leading to reduced braking efficiency. Therefore, it is crucial to replace the brake fluid during major car maintenance to avoid unnecessary issues. 2. Spark plugs also need to be replaced. As one of the most important components in a car, replacing spark plugs during maintenance is essential. If they remain in a carbon-fouled state for a long time, they can cause ignition system failures and, in severe cases, affect other components in the vehicle. 3. Clean or replace the throttle body. The throttle body connects the air filter to the engine cylinders. If it malfunctions, the car may fail to start. Additionally, it can lead to insufficient power and inability to drive while on the road. 4. Top up the car's coolant. As the primary fluid for cooling the car's engine, maintaining the coolant is also essential. A lack of coolant can cause engine malfunctions and prevent the car from starting.