What is the method for cleaning engine scale?

[MacDominic]

Engine scale cleaning method is: 1. Turn off the engine at normal operating temperature, drain the coolant, and add cleaning agent to the cooling system; 2. Start the engine and run at medium speed for 5 to 10 minutes to flush out sediment in the system; 3. Turn off the engine and let it stand for 12 hours; 4. Start the engine and run at medium speed for 5 to 10 minutes, then turn it off and drain the cleaning agent; 5. Replace with clean water and continue flushing until the discharged water is free of contaminants; 6. Reinstall the thermostat, completing the descaling process. The function of the engine is: to convert the thermal energy of fuel into mechanical energy by expanding gas after combustion in a sealed cylinder, pushing the piston to do work, thereby providing power for the vehicle.