What is the method for cleaning engine scale?

[VonFrancisco]

Cleaning engine scale involves the following steps: 1. Turn off the engine; 2. Drain the coolant and add cleaning agent to the engine; 3. Start the engine and let it run at medium speed for five to ten minutes; 4. Add clean water to flush out deposits in the engine; 5. Turn off the engine and let it sit for fifteen minutes, then replace with clean water and rinse two to three times. The benefits of cleaning engine scale include: 1. Enhancing the performance of engine oil; 2. Improving engine efficiency and reducing noise; 3. Optimizing the engine's lubrication system, lowering engine temperature, and improving oil flow; 4. Extending the engine's service life.