LIQUI MOLY Catalytic system Cleaner 300ml

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LIQUI MOLY Catalytic System Cleaner works to remove carbon deposits, soot, and other contaminants from the catalytic converter and exhaust system components.

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LIQUI MOLY Catalytic System Cleaner 300ml.

LIQUI MOLY Catalytic System Cleaner is an additive that is designed to clean and protect the catalytic converter and other components of the exhaust system in gasoline and diesel engines. The catalytic converter is an important part of the exhaust system that helps to reduce harmful emissions from the engine, and it can become inactive over time.

The cleaner contains a blend of powerful detergents and active cleaning agents that work to remove carbon deposits, soot, and other contaminants from the catalytic converter and other exhaust system components. This helps to improve the performance of the engine, reduce emissions, and extend the life of the catalytic converter.


LIQUI MOLY Catalytic System Cleaner offers an array of features that make it a trusted choice for automotive enthusiasts and professionals alike. This advanced cleaner is specially formulated to target and remove carbon deposits and contaminants that accumulate within the catalytic converter and exhaust system over time.

By using a combination of powerful cleaning agents, LIQUI MOLY Catalytic System Cleaner effectively breaks down and dissolves harmful deposits, allowing the catalytic system to operate at optimal efficiency. Its specialized formulation ensures deep cleaning without causing any damage to the sensitive components of the exhaust system.

Additionally, LIQUI MOLY Catalytic System Cleaner includes ingredients that help clean and rejuvenate oxygen sensors, which play a vital role in monitoring and regulating the air-fuel mixture for efficient combustion. By restoring the functionality of these sensors, the cleaner contributes to improved engine performance and fuel economy.


The benefits of LIQUI MOLY Catalytic System Cleaner extend beyond its remarkable features. Regular use of this cleaner provides numerous advantages that positively impact your vehicle’s performance, fuel efficiency, and environmental footprint.

Firstly, LIQUI MOLY Catalytic System Cleaner helps remove carbon deposits and contaminants from the catalytic converter and exhaust system. These deposits can impede the flow of exhaust gases, limiting the converter’s ability to reduce harmful emissions effectively. By restoring the catalytic converter’s efficiency, the cleaner helps reduce emissions and ensures compliance with environmental regulations.

Furthermore, a cleaner and more efficient catalytic system leads to improved engine performance. By optimizing the exhaust flow and combustion processes, LIQUI MOLY Catalytic System Cleaner enhances the overall power output and responsiveness of the engine. This results in smoother acceleration, better throttle response, and an overall enjoyable driving experience.

In terms of fuel efficiency, the cleaner plays a crucial role in restoring the proper air-fuel mixture and combustion efficiency. By removing carbon deposits and improving oxygen sensor functionality, LIQUI MOLY Catalytic System Cleaner helps achieve better fuel economy, saving you money at the pump.

LIQUI MOLY Catalytic System Cleaner Price in Sri Lanka

The price of LIQUI MOLY Catalytic System Cleaner in Sri Lanka may vary depending on the retailer and the quantity you purchase. However, considering the significant benefits it offers, the cost is well worth the investment. On average, a 300ml bottle of LIQUI MOLY Catalytic System Cleaner can range from Rs. 3,000 to Rs. 6,000 in Sri Lanka. It is advisable to check with authorized LIQUI MOLY dealers or reputable automotive stores for the most accurate pricing information.

How to Use LIQUI MOLY Catalytic System Cleaner

Using LIQUI MOLY Catalytic System Cleaner is a simple and straightforward process. To ensure optimal results, follow these steps:

  1. Start by ensuring that your vehicle’s engine is turned off and the exhaust system has cooled down.
  2. Locate the catalytic converter, which is typically situated between the exhaust manifold and the muffler. Note that in some vehicles, there may be more than one catalytic converter.
  3. Shake the bottle of LIQUI MOLY Catalytic System Cleaner thoroughly to ensure proper mixing of the cleaning agents.
  4. With the engine still turned off, carefully insert the provided applicator tube into the catalytic converter through the oxygen sensor hole. Ensure that the tube reaches the interior of the converter.
  5. Slowly and evenly squeeze the contents of the bottle into the catalytic converter.
  6. Allow the cleaner to sit and penetrate the deposits for the recommended period, as mentioned in the instructions on the bottle.
  7. After the designated time has passed, start the engine and let it run for approximately 10-15 minutes. This will help the cleaner circulate throughout the exhaust system, ensuring thorough cleaning.
  8. Finally, take your vehicle for a short drive, preferably on a highway or open road, to allow the cleaner to further clean and burn off any remaining deposits.

Note: It is recommended to use LIQUI MOLY Catalytic System Cleaner every 10,000 miles (or as per manufacturer’s recommendation) to maintain optimal catalytic system performance.

Technical data

Base: an additive mixture in a liquid carrier
Color/Appearance: light yellow, clear
Regulation on Flammable Liquids Class (Germany) A II
Flashpoint: >61 °C
Pour point: -45 °C
Form: liquid
Odor: characteristic
Viscosity at 40 °C: <7 mm²/s
Density at 15 °C: 0,765 g/cm³

Areas of application

Suitable for all gasoline engines with a catalytic converter.

Comment: Deposits in the catalytic converter based on manganese oxide cannot be removed.

Application & Instruction

Pour the additive into the LIQUI MOLY Pump-spray Bottle (part no. 3316). Pump up the pump-spray bottle. Establish access to the intake tract, ideally behind the turbocharger. Please note that the access must be located immediately behind the air-flow sensor. Start the engine and spray the additive into the intake tract at short intervals while the engine is at moderate speed (2,000-3,000 rpm). If the speed does not begin to fluctuate, the intervals between spraying can be lengthened. If the speed fluctuates sharply (<700 rpm), shorten the intervals between spraying. For fine atomization, check regularly that the pump-spray bottle has sufficient residual pressure. LIQUI MOLY cannot offer any warranty if the product is not used as specified in the product information or if dosing systems other than those indicated here are used. It is the responsibility of the user alone to verify the suitability of alternative dosing systems. To ensure optimum cleaning of the fuel system, we recommend adding Catalytic-System Clean (part no. 7110) to the fuel immediately after applying the additive. This will safeguard the cleanness of the complete engine system including the exhaust gas system.


LIQUI MOLY Catalytic System Cleaner offers a reliable solution to effectively clean and maintain your vehicle’s catalytic system. By utilizing its advanced features, you can experience improved engine performance, enhanced fuel efficiency, and reduced emissions. With its easy-to-use formulation and exceptional benefits, LIQUI MOLY Catalytic System Cleaner is a valuable addition to any vehicle maintenance routine. Invest in this professional-grade cleaner and enjoy a cleaner exhaust system, increased efficiency, and a more enjoyable driving experience.

Our information is based on thorough research and may be considered reliable, although not legally binding.

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