How to Use a Three-Way Catalytic Converter Cleaner?
4 Answers
The usage method of a three-way catalytic converter cleaner is as follows: 1. Start the engine and turn it off after the water temperature normalizes; 2. Pour the cleaner into a dedicated device and connect the device's output connector to the vacuum tube; 3. Start the engine, maintain the RPM at around 2000, open the flow control valve, and slowly drip the cleaner into the intake tract; 4. After cleaning, keep the engine running at the same RPM for 3 to 5 minutes to expel any residual liquid. The three-way catalytic converter is an external purification device installed in the vehicle's exhaust system, which converts harmful gases such as carbon monoxide, hydrocarbons, and nitrogen oxides emitted from the vehicle's exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions.
Last time I used a catalytic converter cleaner myself and found the operation quite convenient. Generally, when the fuel tank is left with about a quarter of fuel, I pour the entire bottle of cleaner in and immediately drive to the gas station to fill up a full tank. This way, the cleaner can mix evenly with the fuel, reducing the chance of residue. Then, I drive normally until the entire tank is used up, preferably on highways or long trips to raise the engine temperature, which helps dissolve carbon deposits. After using it, I felt the car's exhaust became smoother, the exhaust fumes less smelly, and it was easier to pass the annual emission test. Don't use it too frequently; I find using it every 8,000 kilometers is just right, as using it too often might damage the sensors. If the catalytic converter in an older car is severely clogged, this cleaner might have limited effect, and replacing it might be necessary. Also, avoiding sudden braking during normal driving can reduce carbon buildup, which is a simple maintenance tip.
The steps for using a catalytic converter cleaner are quite simple. I usually add a bottle of cleaner when the fuel tank is nearly empty, around 100 km of remaining range, to avoid waste. After pouring it in, fill up the tank with fuel and drive normally until the entire tank is consumed. During this process, try to avoid short trips to keep the engine at high temperatures longer for more thorough cleaning. In terms of effectiveness, exhaust emissions will be reduced, and the car will feel more responsive when starting. However, it's important not to use it every month, as excessive cleaning may damage the internal coating of the catalytic converter. Cleaning every 5,000-10,000 km for preventive maintenance works well, and choosing a time with less driving, like during rainy days, is safer. Incorporate it into your vehicle's regular maintenance schedule, and check the O2 sensor condition in advance to prevent minor issues from worsening.
Using a catalytic converter cleaner is not difficult. When the fuel tank is low, pour a bottle in, then fill up the tank and drive until the fuel gauge is near empty. During this process, the cleaner flows through the catalytic converter to remove carbon deposits, and the exhaust becomes cleaner after driving. Don't use it too frequently; once every 5,000 kilometers is enough. Choose high-quality products and don't go for the cheapest option. The operation is simple, making it suitable for novice car owners to try.
