Is the carbon cleaning agent really useful?

Engine carbon deposit cleaning agent is still useful, as follows: 1. The engine carbon deposit cleaning agent is a colorless transparent liquid made of additives such as high-efficiency surfactant, emulsion and corrosion inhibitor, which is diluted with 3-6% water when used. 2. It has strong washing ability for oil stains such as mineral oil, animal and vegetable oil. 3. However, it should be noted that if the vehicle is not cleaned frequently, please use it with caution, because the cleaned carbon deposit will block the oil filter and cause serious damage to the engine.