Disassembly-Free, High-Efficiency Cleaning No need to disassemble the engine or three-way catalytic converter. Add the cleaning agent directly through the fuel or system to dissolve carbon deposits, sulfides, and oxides adhering to the catalyst , restoring catalytic efficiency and saving labor and cleaning costs. Exhaust Gas Purification Upgrade Effectively reduces exhaust emissions of harmful substances such as CO, HC, and NOx, helping vehicles pass annual environmental inspection standards while also alleviating power loss and increased fuel consumption caused by catalyst clogs. Engine Carbon Deposits Simultaneous Cleaning The cleaning agent enters the combustion chamber along with the fuel, breaking down carbon deposits on the injectors, piston crowns, and valves, improving combustion efficiency, idle stability, and acceleration response. Metal Protection Technology Contains a special corrosion inhibitor formula that protects the precious metal coatings (rhodium, and palladium) of the three-way catalytic converter during the cleaning process, extending the catalyst's life and preventing secondary contamination. Easy-to-Use Design Add to the tank before refueling. Compatible with gasoline or diesel vehicles (select the corresponding model). A single bottle is suitable for tanks of 50-70L. It is recommended to use it every 5,000 kilometers for worry-free maintenance. Applicable scenarios: Excessive exhaust gas and faults during annual inspection Package: 1 pcs 120ml Three-way catalytic cleaner