What is the purpose of cleaning the engine?

[Daniella]

The purpose of cleaning the engine is: 1. To prevent oil mixing and remove sludge and oil films formed by engine oil; 2. To reduce corrosion of engine wiring or rubber hoses; 3. To unclog blocked oil passages; 4. To improve engine efficiency, reduce noise and fuel consumption; 5. To clean the engine lubrication system; 6. To prevent the engine from burning oil. The method for cleaning the engine is: 1. Open the fuel tank cap, remove the filter screen, and use a hose to extract the fuel from the tank, then add ethanol gasoline and replace it with a cleaning agent; 2. Disconnect the engine's inlet and return fuel pipes; 3. Add the fuel to the storage tank of the no-disassembly cleaning agent; 4. Adjust the pressure; 5. After cleaning the impurities at the bottom of the fuel tank, drain the gasoline from the tank.