Features:

  • Using Cataclean can lower your total hydrocarbon emissions by up to 50 percent
  • Reduces carbon build-up in catalytic converter, oxygen sensors, fuel injectors and cylinder heads which results in improved fuel efficiency
  • Improves overall vehicle performance-including driveability issues such as power reduction, hesitation, rough idle, hard starts and lost fuel economy
  • Safe for gasoline, diesel, hybrid and flex-fuel vehicles; does not alter fuel
  • Not for use in 2-stroke or oil / gas mix engines
If your Catalytic converter is just dirty and it has not been damaged then this will work ...

Here is the deal. If your Catalytic converter is just dirty and has not been damaged then this will work for you. It is very nice product to keep fuel system efficient and clean. However, if your catalytic converter is broken or damaged then don't waste your money. Mine was dirty and the check engine light came on and i used it twice and the check engine light has gone away. So it worked for me. I will keep using it every 3 months. My car runs very smoothly after using this product.

Amazingly Surprised!

I had just returned from a 1200 trip in my Durango that has 200,000 miles. The very next day my check engine light turned on. It was the P0420 code for the catalytic converter. I am always apprehensive about putting any products or additives that I have not used before or researched. I researched the heck out of this and decided to go with it. I did actually use two bottles but, one may work for you. I added one bottle when my gas tank was close to full. Then I followed the directions on the second bottle and poured it into the tank when it was a quarter full. After I ran it for the recommended miles and filled up again, it took roughly a half tank and the check engine light turned itself off. I didn't reset or clear the code. I am pretty please as of right now and will be able to get my emission test done.

It works!

I had a check engine light on, which was a pretty significant bummer since I had to get an emissions test to renew my registration; in my state, a check engine light is an auto-fail on emissions tests. Bought an OBD meter (also a great investment), said it was a catalytic converter issue - I cleared the code multiple times, but it kept coming back. At the prospect of a $700+ repair/replacement, I decided to try Cataclean instead. I did it mostly by the instructions, but also incorporated the recommendation of a commenter (may have been on a different website) - I put it in right before I got on the highway. It was about 9 pm, so it was mostly empty. - I got into the left lane, and continuously revved the engine to the highest RPM's I could, then let it settle down. Did that for about 20 miles. - When I got home, I used my OBD meter to clear my codes. Drove for about 50 miles before I went in to get the emissions test, passed with flying colors. I've driven 500+ miles since, code has not come back. Definitely recommend this for anyone who knows the engine is throwing a catalytic converter code, before taking it to the mechanic. Between this and the OBD meter I bought, I saved probably about $1k vs taking it to the shop.

I'M A BELIEVER !!!

I was skeptical. My 99 Jeep Cherokee has had a check engine light on for over a year, the code indicate that there was a problem with the catalytic converter, not wanting to take it to the dealer for a lot of $$$ I decided to try this additive. I followed the direction saying to add with tank half full of gas then drive 10 -20 miles after reseting the code. I held my breath thinking the light would pop back on at any time, but now after several months and thousands of miles, NO CHECK ENGINE LIGHT !!!

Spending $16-20 on the Cataclean before you touch the expensive oxygen sensors or catalytic convertors could be a good investmen

This is my story. My Honda Odyssey EX-L 2005 (85K miles, first owner, bought new, all regular maintenance) all of sudden had a CEL light on 11/22/2016. It threw a code of P0420 pointing at catalyst system efficiency below threshold (bank 1). Based on my research, there are too many things that can cause this code. However, if it comes to the catalytic convertor or oxygen sensor replacement, the expense could be too high. So, I decided to take care of it myself before I go to Honda dealer or other mechanics. I first changed the engine oil at Walmart, just regular Quake 5w20 oil. Besides, I asked the technician at Walmart to add a bottle of Lucas (heavy duty Oil stabilizer, white bottle) as well because the engine seems to burn a bit oil over time. I also filled the gas tank up (regular 87 gas) and added a bottle of Heet (red bottle, Heet Fuel Line Antifreeze, Water Remover and Fuel Injector Cleaner) into the gas tank to remove water and hopefully to clean the fuel injector. Then I cleared the code myself and started driving the vehicle locally. After driving about 135 miles, the engine light was on again and had the same single P0420 code. At the time, the Cataclean I ordered from Amazon arrived so I want to give it a shot. At this weekend (12/03/2016), I already drove the car for about 190 miles since I filled the gas full. I poured the whole Cataclean into the gas tank, which had a bit less than a quarter tank of gas. Then I drove on to highway. As some reviewers suggested, when there were no cars close to me, I stepped on the gas pedal hard (almost 'floored' it) to get RPM to 5K. When the RPM reached 5k, the speed of the car was about 85 miles on highway and then RPM immediately fell back below 4k and 3k itself. I released the gas pedal to slower the car. (If you do that as well, do be careful. Nobody wants to get a speed ticket on high way, right?). I did the same cycle for about 5 times on highway: slowing down to about 60 miles/hr -- flooring gas pedal to reach 5k RPM (speed over 80 mile/hr) -- releasing gas pedal to let the car slow down. After driving about 30 miles, I stopped in front of a mall to shop a while. About 15 minutes later I came back to the car and started it. You know what, the engine light was off, on its own! I drove another 40 plus miles after that and stopped at a gas station to add some fuel. I just added 6 gallons of regular 87 gas. As I do not plan to add premium gas in the future, I did not want to do it now as some reviewers suggested. With 6 gallons of fuel, I drove more than 120 miles before I filled the gas tank again. That 6 gallons of gas gave me about 21-22 miles/gallon gas mileage, which was about right for Honda Odyssey. The engine light is still off (after driving 170 miles). I felt the car was getting more power after adding the cataclean. The acceleration was smooth and more powerful. I did not observe any black smoke (or any kind of smoke) from the tailpipe when I floored the gas pedal. The car did not have any driving issue or noise or anything. I did not expect it worked so well when I did not see any smoke or anything coming out of the tailpipe. But obviously it helped clean the catalytic convertors or oxygen sensors or whatever that threw the P0420 code. I am not sure how long the code will be off and I will post a follow-up comment in the future. Again, the car has been maintained regularly for oil change, transmission flush, and I added sea foam to gas, oil gasket, and even brake air intake lines once every other year. However, the car was driven mostly local in the past 4-5 years. I can tell you, its RPM never reached 5K in the past 5 years. What causes the P0420 code? I do not know. But obviously the Cataclean did help at this time. Spending $16-20 on the Cataclean before you touch the expensive oxygen sensors or catalytic convertors could be a good investment. I plan to buy another bottle in case the code comes back again. Good luck to you DIY maintenance.

It actually works. Got some top end power back.

Bmw E46 330i. These cars have issues with cats getting clogged and I was feeling a little lack of power at the top end. Classic sign of a clogging catalytic converter. Decided to be proactive and hit it with these. After using the engine didn't blow up so off to a good start. Ran it a few times to redline the next day and can definitely notice a stronger pull to redline. I will porbably buy this again and hit one more time. Was worried is was snake oil. Not snake oil. Actually works. Color me surprised.

Check Engine light out for code 420 after use.

Did as directions said. Then filled tank up, drove around 200 miles light finally went out. I'm still changing O2 sensor bank 1 for code 420. Will see if light stays out permanently.

Worked for me

My 1997 Toyota Avalon has had the check engine light on for years. Every two years when it comes time to renew with smog certification, I tell myself this time I will donate the car to charity. Then I think of the benefit of a fully paid for car as a fallback and decide to once again go to cat a clean. Following the instructions has extended my ownership for six years now. The dealer wants $3000 for parts and installation for my car. With cat a clean I have to turn off the code myself (I bought a code reader for about $13 from Amazon). The light remains off for about three months and the smog test results show everything not only within limits but at the low end of the allowable quantities. In California (Maybe all states the car has to be driven enough to reset the code monitor system parameters to show that you didn't turn off the light just before the test.) My smog test guy said at least 60-80 miles. I have driven over 120 miles before going in or a test. It has worked for me 3 times over six years. Well worth the $21.

Work as Advertised

After reading several reviews of this product, I decided to give it a go. It work exactly as advertised. My 2001 Chevy Tahoe kept kicking out a code for catalytic converter problems. I followed the instructions exactly as it was on the bottle and the code has never come back. As some of the reviews for had stated and the bottle also states it is a good idea run a second treatment through. After running the second treatment the vehicle is running very smooth and I definitely have seen an increase in the gas mileage. I have a high mileage Tahoe with over 235,000 miles. I believe some of the reviews where people fit the product in the work they may have had more difficulties with their catalytic converter system to just being dirty. Obviously not all power to work all the time for every application but I believe in this product.

This WORKS!!!

I am so happy to have found this product!!! My car dealer wanted upwards of $1800 to replace the "cats" in my catalytic converter of my 2009 Subaru Forrester. Instead, I ordered a bottle of CataClean, knowing I had relatively nothing to lose. So glad I did! I followed the detailed directions of the gentleman who reviewed this product on Amazon and was kind enough to tell me (and others) exactly how to use this, so it will do the BEST job of cleaning your catalytic converter. After the first treatment, ALL the red lights on my dashboard went off and stayed off for 2 weeks. I re-treated, and this time all the lights went off and have stayed off for almost 3 months now! The lights are STILL off! This is a great product, worth every penny and more!!! I intend to use it to maintain the catalytic converter in good working order for as long as I own the vehicle.

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