Best Catalytic Converter Cleaner

Are you looking for the best catalytic converter cleaner?

A catalytic converter cleaner is a formula that is added to the fuel chamber. It removes carbon buildup from the catalytic converter and the rest of your fueling system, including the fuel injectors.

The average lifespan of a catalytic converter is around 100,000 miles, though many can survive longer [1]. These devices may need to be cleaned or replaced because they might become clogged.

Increased fuel usage, heavy exhaust smoke, and a sulfuric odor coming from your exhaust pipe are all indications that it may be time to clean or replace your catalytic converter [2].

Depending on the extent of the obstruction or damage to the component, you may be able to enhance the performance of your catalytic converter by using a fuel system or catalytic converter cleaner.

Best Catalytic Converter Cleaners


  1. Best Overall

The best overall cleaner currently available is the AUTOPROFI OXICAT Catalytic Converter Cleaner. It is known to be a powerful catalytic converter cleaner that strikes an excellent balance between price and performance.

It is a secure and highly efficient alternative for both diesel and gasoline-powered motors. Additionally, the solution can clean the entire exhaust system, even though the manufacturer only mentions the oxygen sensor and catalytic converter.

The fluid reduces emissions, which ensures your vehicle adheres to the most recent environmental regulations and passes the emission test.

You can maintain the cleanliness of your car’s exhaust system by using the OXICAT oxygen sensor and catalytic converter regularly. It aids in preventing the buildup of hazardous residues and gases by dispersing these particles throughout the system.

The AUTOPROFI OXICAT Catalytic Converter Cleaner’s best feature is that it activates automatically as soon as the converter reaches the proper operating temperature. The AUTOPROFI OXICAT Catalytic Converter Cleaner also has TUV certification for enhanced dependability and security.

Key Features

  • Regular use ensures that your fuel system operates as efficiently as possible.
  • It thoroughly cleans the exhaust system.
  • Verified by TUV.
  • Suitable for all gasoline and diesel vehicle types.
  • Not a comprehensive fuel system cleaning option.
  • Quantity might not be enough for more demanding applications.
  1. Best Performance

The Cataclean 120007 Complete Engine and Exhaust System Cleaner is a multipurpose, high-performance additive that can be used to clean a variety of internal engine components.

Cataclean has a significant impact on reducing your car’s carbon footprint by up to 50%. It accomplishes this by getting rid of the deposits on things like fuel injectors, cylinder heads, oxygen sensors, and catalytic converters. Consequently, it is a one-stop shop for all of your engine-related problems and one of the best catalytic converter cleaners.

Furthermore, it improves drivability since carbon can clog your converter and restrict the engine’s ability to breathe. Low airflow from blockage reduces fuel economy, limits power, and raises emissions.  This cleaner also cleanses your cylinder heads and fuel injectors, helping to get rid of accumulations in those parts.

You do benefit from increased engine performance, increased fuel efficiency, and decreased harmful emissions when using Cataclean.

It also complies with VOC and OTC rules and meets the standards for low sulfur content set forth by the federal government.

Key Features

  • Safe for hybrid, gas, and diesel engines
  • 50% reduction in emissions
  • Increases the engine’s overall performance.
  • Meets several regulations
  • Not suitable for 2-stroke, oil-powered, or gas-only engines.
  • Expensive in comparison to other fuel additives.
  1. Best Budget

The Sea Foam SF-16 is an inexpensive substitute that may be used to clean the catalytic converter as well as the fuel system.

Sea Foam cleans the fuel injectors, carburetor passageways, and other components of your engine system. It also removes hazardous deposits and residues. Additionally, it lubricates the top cylinders.

The fact that this cleaner also functions well as a gasoline stabilizer is another plus. By delaying evaporation and conserving vapors, Sea Foam can increase the fuel efficiency of your vehicle. It also prevents the formation of buildup and varnish.

Because it provides all these features at reasonable costs, Sea Foam is one of the best catalytic converter cleaners in the market. You can clean the whole car system with Sea Foam because it works with crankcase oil, gasoline, and diesel fuel systems.

Key Features

  • Removes deposits to clean the channels of the carburetor.
  • Prevents evaporation, which stabilizes fuels
  • Inexpensive
  • Registered with EPA
  • One cleaner cannot provide comprehensive care.
  1. Best Shelf-Life and Most Reliable

If the shelf life is crucial to you, you should consider the ClearLover collection. It will be the finest choice for bikes or other compact fuel tanks for year-round maintenance.

If you don’t require a catalytic converter cleaner too regularly, the ClearLover Catalytic Converter Cleaner is a fantastic option. There are 3 bottles in this set, each holding around 4 ounces of liquid.

The fluid has a very long shelf life and only be used when necessary. You can also keep adding a bottle to the set each time you use it for dependable storage.

The advantages of using ClearLover Catalytic Converter Cleaner are numerous. To begin with, this is a multipurpose cleaning agent that cleans automotive components, and fuel systems, and also functions as an additive for both gasoline and diesel engines.

If after using many bottles you still don’t see a difference in the functioning of the engine, ClearLover provides you a money-back guarantee. The ClearLover Catalytic Converter Cleaner not only cleans the exhaust system but also the oxygen sensors, fuel injectors, and other vital components.

Key Features

  • Able to clean many parts, including the oxygen sensor, fuel injectors, and exhaust system.
  • Includes a refund assurance.
  • Excellent choice for a longer shelf life.
  • The most suitable choice for bikes and smaller fuel tanks.
  • Dependable alternative.
  • Larger gasoline tanks may require more than the available quantity.
  1. Best Value for Money

Chevron, one of the well-known brands throughout the world, provides the best fuel system cleaning available. It makes use of additive technology to maximize engine performance while reducing emissions and improving overall performance.

Hydrocarbons are present in gasoline and other fuels, and they pass through your car’s fuel system. The car’s emissions rise as a result of the accumulation of these carbon deposits on catalytic converters, engines, and motors over time.

These deposits are eliminated by the Chevron Techron Concentrate Plus Fuel System , which also makes sure that these particles won’t recur in the future.

To guarantee that the fuel is used as efficiently as possible, Techron Concentrate Plus keeps all engine components clean. This cleaner functions flawlessly even with the most current engines.

Key Features

  • Reduces pollutants and improves engine performance
  • Optimizes fuel efficiency
  • Suitable for all engine types.
  • Value for money
  • For the best outcomes, a large quantity might be necessary. 

How to choose catalytic converter cleaner?


Even though most cleaning products are effective, there are a few things to keep in mind when shopping. The following are some of the factors to consider for the best catalytic converter cleaners.

  1. Compatibility

Analyze whether or not the cleaner is compatible with the engine of your car. Most catalytic converter cleaners work with gasoline-powered vehicles. When it comes to hybrid or diesel engines, there is a compatibility issue.

  1. Cleaning Capacity

It would be excellent if you could find a cleaning chemical that can effectively clean both the catalytic converter and all of the other components. These cleaners can restore the health of numerous exhaust system components and dramatically lower carbon emissions.

  1. Quantity

When treating your car’s catalytic converter, keep in mind that you’ll probably need to use the entire bottle. Although the volume needed may change depending on the brand and compound density, the bottles are typically made to be used all at once.

Moreover, bear in mind that the shelf life of these cleaning agents is not very long. Therefore, as soon as the seal is broken, you must use the entire amount of the cleaning agent.

So, if you are treating just one car or bike, it’s wise to choose a smaller-capacity option. You can also consider purchasing several sets of little bottles for later use.

  1. Compound Efficiency

Before making a decision, consider the chemical’s overall effectiveness. It also impacts how much fluid you require and how frequently you need to use the catalytic converter cleaner. Ideally, a catalytic converter cleaner solution can be used straight from the bottle and doesn’t need any additional ingredients.

Read Also: Common Sings of Stolen Catalytic Converter


Catalytic converters are essential to the operation of the car, particularly in the exhaust and fuel systems. It’s crucial to clean your car’s catalytic converter at least 3 to 4 times a year, more frequently if you live in an area with a lot of dust.

As a result, you should always have a few bottles of catalytic converter cleaning solution stored in your garage.

Use the best catalytic converter cleaner to ensure your car’s engine runs well. You can find the best cleaner by considering the several options provided in this article. You can also follow the guidelines for choosing the best cleaner as explained above.

Keeping the catalytic converter free of dirt and carbon buildup should be a top priority. This could protect you from a replacement or repair. It is advisable to visit a nearby vehicle repair shop if you believe your catalytic converter is broken or needs to be changed.

Read Next: Sings of Stolen Catalytic Converters