How Often Should Engine Cleaning and Maintenance Be Performed?

[Clifford]

Engine cleaning is generally recommended every 30,000 to 50,000 kilometers and does not require overly frequent maintenance. The reasons are as follows: 1. Most lubricants used in modern passenger cars come with built-in cleaning functions, ensuring that the engine does not accumulate sludge or only minimal amounts within a certain mileage. 2. Cleaning agents can be corrosive and may damage non-metal components inside the engine, leading to engine malfunctions. 3. If the vehicle has been driven for a long distance, cleaning the engine may result in reduced oil pressure, cylinder gasket leaks, and other issues, causing significant damage. 4. Over time, internal components wear out, and the accumulated sludge can help compensate for and repair some of this wear. If the air filter becomes clogged or accumulates too much dust, it can restrict engine airflow, allowing large amounts of dust to enter the cylinders. This accelerates carbon buildup, leading to poor ignition, reduced power, and increased fuel consumption. For normal city driving, the air filter should be inspected every 5,000 kilometers. If excessive dust is present, compressed air can be used to blow the dust out from the inside of the filter. However, the pressure should not be too high to avoid damaging the filter paper. It is important to note that water or oil should never be used to clean the air filter, as this can saturate and damage the filter element. For cleaning the combustion chamber, a specialized carbon remover can be used to soften and loosen carbon deposits on the chamber and fuel injectors, making them easier to remove. This method is highly effective, avoids surface damage to components compared to direct scrubbing, and significantly improves carbon removal efficiency.