Cleaning Catalytic Converter With Lacquer Thinner: Detailed instructions

As you know, cleaning the catalytic converter is challenging because it requires the operator to know the details of this part.

Currently, many users choose cleaning catalytic converters with lacquer thinner. Is this fuel efficient and safe for catalytic converters? The following article will help you answer this question precisely.

Cleaning Catalytic Converter With Lacquer Thinner

Does the Lacquer Thinner clean the catalytic converter?

Many users now think that lacquer thinner catalytic converter cleaner. But some argue it could be more effective at cleaning the catalytic converter. And the answer is no.

Lacquer thinner will not be able to clean your catalytic converter. This compound has the same chemical properties and burns with gasoline. Using lacquer thinner will not do any good for cleaning the catalytic converter.

Also, when you use a lacquer thinner, the compound dissolves some other substances, such as gums, and gets into the fuel system. When it does, it will negatively affect parts like your washers, gaskets, or hoses.

What happens if you dilute the lacquer in the gas tank?

Unlike Scotty kilmer catalytic converter cleaner, Lacquer Thinner will have bad consequences if you opt for a catalytic converter. However, if you still want to use this kit, you can only use a small amount inside the fuel tank. Note that you must empty the gas tank before putting the Lacquer Thinner in.

You will get many instructions for lacquer thinner on many different channels, but professionals recommend something other than this.

Technically, this compound breaks down the build-up of dirt inside the converter. But no manufacturer has come forward to produce Lacquer Thinner publicly.

Catalytic converter cleaning in less than 5 Minutes/Cleaning Catalytic converter

To start cleaning the catalytic converter, you can see the instructions for the catalytic converter cleaner on Youtube. When you do, you need to accept that the lacquer thinner will cause some internal damage. Therefore, you should choose alternative products that are safe and recommended by experts.

How to clean the catalytic converter with lacquer thinner

How to clean the catalytic converter with lacquer thinner?

Some argue that this compound will not be able to clean the catalytic converter. Therefore, when you read some of the tutorials, you will feel confused about this statement. However, you can verify the effectiveness of lacquer thinner by testing it on your vehicle. So, how to use lacquer thinner? 

To do this, simply drain the fuel inside the tank and pour a small amount of lacquer thinner inside. This compound works on the mechanism of dirt corrosion. However, it also corrodes parts made of rubber and plastic.

As a result, this will cause the parts of the catalytic converter to corrode. It will damage or limit the effectiveness of the details. On the other hand, converters always operate at very high temperatures. Using lacquer thinner will cause the temperature to rise rapidly and cause an explosion.

The accompanying consequences will include a series of failures occurring:

  • Power cord in the fuel tank
  • Fuel pump
  • Fuel filter
  • Fuel gauge kit

So, the best way is to stop using lacquer thinner. Because even if the paint is lighter to clean catalytic plastic and rubber parts will still be affected. Use expertly recommended product kits specifically for catalytic converters.

This will help you protect the adapter as well as improve the efficiency of cleaning it.

Is Lacquer Thinner suitable for cleaning catalytic converters?

As discussed above, Lacquer Thinner is unsuitable for catalytic converters.

Therefore, in comparing cetacean vs lacquer thinner, cetacean always wins in terms of efficiency when used for catalytic converters. This compound is the best detergent for users.

In addition to using the catalytic converter, the user can also clean the oxygen sensor.

Along with the quality, Cataclean has a relatively high price. It makes many users feel they need clarification when choosing. However, it is worth your investment for a catalytic converter. This compound always provides absolute safety for plastic and rubber parts. However, sometimes Cataclean also has some common problems that will be included in this article!

What is the best cleaner for catalytic converters?

Do nothing

As you know, the catalytic converter has a self-cleaning mechanism. The temperature at this part is large enough to keep it clean. Therefore, users will limit lacquer thinners’ use to clean the converter.

However, if you burn something other than gasoline during use, it will cause the converter to clog. For example, oil and carbon buildup inside will clog pipes. You’ll notice the adapter overheating and appearing bright red when you do.

Soak in regular Dawn dishwashing liquid

Soak in regular Dawn dishwashing liquid

Dawn dishwashing liquid will help you clean clogged pipes in the catalytic converter.

When you do, you need to rinse the catalytic converter faucet with clean water the next day. You can check by using a flashlight to look inside the tube. Make sure the hose is always clean before putting it into use.

If using Dawn cannot help you remove dirt, you need more vital cleaning compounds. At auto repair dealers, there are always a lot of cleaning products available for you to choose from.

Replacing the catalytic converter

When these parts are too old, you should replace them. It will save you a lot of cleaning time without being effective. In addition, replacing the catalytic converter will also prevent damage to related components.

Catalytic Converter Cleaning Tips

Catalytic converters play a crucial role in reducing harmful emissions from vehicles, but they can become clogged or dirty over time, affecting their performance. Here are some tips for cleaning your catalytic converter:

  • Use a catalytic converter cleaner: There are many commercial cleaners available that are specifically designed for cleaning catalytic converters. These cleaners can dissolve carbon buildup and other contaminants, restoring the catalytic converter’s performance.
  • Check for damage: Before attempting to clean the catalytic converter, inspect it for any signs of damage. If you notice any cracks or other damage, the converter may need to be replaced instead of cleaned.
  • Use high-quality fuel: Using high-quality fuel with low levels of sulfur can help prevent the buildup of contaminants in the catalytic converter, reducing the need for cleaning.
  • Check your oxygen sensors: Faulty oxygen sensors can cause the catalytic converter to become clogged or dirty more quickly. Check your oxygen sensors regularly and replace them if needed.
  • Drive your vehicle regularly: Regular use of your vehicle can help prevent the buildup of contaminants in the catalytic converter. If you only use your vehicle occasionally, consider taking it for a longer drive to help keep the catalytic converter clean. 


Is it safe to run lacquer thinner in the gas tank?

You should not use lacquer thinner. Although it helps dissolve dirt when mixed with gasoline, it also corrodes rubber and plastic. These parts may then be damaged after several uses of lacquer thinner.

Does lacquer thinner clean O2 sensors?

To be able to use the oxygen sensor, you should not use paint thinner. You should use cetacean instead. This compound is very safe when you use it for sensors.

What is the best way to clean a catalytic converter?

You should choose professional-recommended catalytic converter cleaning kits. Products like Lacquer Thinner will cause rubber and plastic parts to corrode.

What can I spray on my catalytic converter?

You can choose from automotive exhaust spray paint with temperatures from 1300 to 2000 OF. This bright paint will help create a visible barrier layer to warn the thieves to continue.

Why would I need to clean my catalytic converter?

A dirty or clogged catalytic converter can negatively impact your car’s performance, fuel efficiency, and emissions output. Cleaning it can help restore its function and efficiency.

How do I clean my catalytic converter with lacquer thinner?

To clean your catalytic converter with lacquer thinner, you will need to remove it from your car and soak it in a container filled with lacquer thinner for a few hours. After soaking, rinse it thoroughly with water and allow it to dry completely before reinstalling it.


Beyond that, you should not use a cleaning catalytic converter with lacquer thinner because this detergent will also cause the parts of the catalytic converter to corrode. Instead, you should use products recommended by experts. It is the best way to protect your catalytic converter.

Thanks for reading!

Leave a Comment