How to clean the engine cleaning oil circuit

Method of cleaning engine oil circuit: 1. Adding fuel cleaner directly into the fuel tank is the simplest method, but the effect is not lasting and the cleaning effect is not thorough, which is suitable for vehicles with short mileage. 2. Cleaning with "hanging bottle" can clean the carbon deposits and deposits in the automobile oil circuit and valve at the same time, which is also the cleaning method recommended by general automobile repair shops; 3. Use a disassembly-free cleaning machine for cleaning. This method uses a special disassembly-free cleaning machine to connect the oil inlet pipe and oil return pipe of the engine with the oil inlet pipe and oil return pipe of the disassembly-free cleaning machine, and connects them with a special interface to form a loop, which is convenient and fast to operate. However, because it only cleans the fuel injector, it will not clean the carbon deposit on the valve.