Catalytic Converter Cleaner

71 reviews for Catalytic Converter Cleaner

1. Vivek DeanVerified Purchase

   Rated 5 out of 5

   My PT Cruiser had P0420 code coming on when gas was below half (kind of an odd problem, it wouldn't come on when gas was full). I followed other direc...More

   My PT Cruiser had P0420 code coming on when gas was below half (kind of an odd problem, it wouldn't come on when gas was full). I followed other directions and threw this in with 1/4th gas tank and drove the hell out of it on the highway for a while (until gas was really low). I did this late at night on a highway (less cars) and I would let the off the gas and slow and then floor it to high RPMs, over and over. I then filled the tank up with premium gas.
   Fleur AndradeVerified Purchase

   Rated 5 out of 5

   Code indicated a bad catalytic converter for years. Considered a new one for years before stumbling upon this product. 20 bucks for the chance to clea...More

   Code indicated a bad catalytic converter for years. Considered a new one for years before stumbling upon this product. 20 bucks for the chance to clear the code. Waited until the tank was low and drove 1 mile to insert the cleaner and put in 4 gallons of gas per instructions. Drove 1 mile back home. Went a total of 18 miles on work commute the next day. About 2 miles from home, the check engine light cleared. Haven't seen it since! It's been about 3 months. Once was enough! Great product.
   Akram WagnerVerified Purchase

   Rated 5 out of 5

   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...More

   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.
   Ella-Mai BowdenVerified Purchase

   Rated 5 out of 5

   Seems to work as advertised. Had my check engine come on due to my catalytic converter. I'm in the stupid state where a catalytic convertor runs close...More

   Seems to work as advertised. Had my check engine come on due to my catalytic converter. I'm in the stupid state where a catalytic convertor runs close to a grand, instead of a few hundred like the 49 other states. The warning must have been borderline, because when the summer blend was changed over, the check engine light went off. Used the Cataclean anyways, and so far the check engine light has not come back up. I don't know if the fuel economy has gotten any better. If it has, it's minor. Maybe a mile per gallon.
   Gracie-Mai PittmanVerified Purchase

   Rated 5 out of 5

   Because it was amazing. Here’s the details. I have a 2004 Lexus GX470 with 210,000 miles. It was registration time again and had to get the vehicle sm...More

   Because it was amazing. Here’s the details. I have a 2004 Lexus GX470 with 210,000 miles. It was registration time again and had to get the vehicle smogged. I took it to my trusty smog station, who I have used for years. Unfortunately my check engine light had been on for a while because my Lexus dealer told me I needed a new catalytic converter. Estimate:$2400. Needless to say, I failed the smog test. I called around looking for used catalytic converters. I told a clerk my situation. I also told him I know nothing about cars so I needed his guidance. After explaining what happened with the failed smog test he offered a solution. He said to order a bottle of Cataclean. He specifically mentioned this brand. He said to pour it into the tank and drive the car around for 15 to 20 miles. I followed his advice. Put it in the tank and as soon as I started to drive the check engine light and other lights went dark. Took it to the same smog station, pulled in and passed the smog test. It’s been over two weeks and the lights are still off. And I get to drive my car another year without having to buy a converter. I’m 100% satisfied.
   Matei RuddVerified Purchase

   Rated 5 out of 5

   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 Fo...More

   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.
   Catherine CrawfordVerified Purchase

   Rated 5 out of 5

   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 fo...More

   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.
   Mike MorrowVerified Purchase

   Rated 5 out of 5

   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 cat...More

   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.
   Kelsie StarkVerified Purchase

   Rated 5 out of 5

   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 f...More

   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.
   Manpreet BradshawVerified Purchase

   Rated 5 out of 5

   It worked, I passed my smog check on the second try after adding it to my gas tank. It saved me $1,800 for new OS 2 oxygen sensors, Bank One exhaust p...More

   It worked, I passed my smog check on the second try after adding it to my gas tank. It saved me $1,800 for new OS 2 oxygen sensors, Bank One exhaust pipe and catalytic converter !!!!