What Should Be Noted When Changing Engine Oil for a Car?

[DelMaria]

When changing engine oil for a car, the following points should be noted: 1. Drain the oil when it's hot for better fluidity; 2. Fill to the level indicated on the dipstick; 3. Choose the oil change interval based on the vehicle's condition, road conditions, oil quality, and driving habits; 4. Select the oil grade according to the driving environment, driving frequency, and the requirements of the vehicle's engine itself—prefer higher grades over lower ones. Engine oil not only lubricates the engine but also performs functions such as cleaning, sealing, buffering, rust prevention, and heat dissipation. When the engine is running, the oil forms a thin film on the surfaces of various components inside the engine, preventing direct contact and friction between these parts.