What methods are used to clean excessive sludge inside the engine?

[LaArthur]

Methods for cleaning excessive sludge inside the engine: Before changing the engine oil, add the sludge cleaner into the engine through the oil filler port, then start the engine and let it idle for 5 to 10 minutes. After that, turn off the engine and drain the sludge cleaner along with the old oil. It is recommended that car owners perform a simple sludge cleaning every 20,000 to 40,000 kilometers. An engine is a machine that converts other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines), jet engines, electric motors, etc. For example, internal combustion engines typically convert chemical energy into mechanical energy.