Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.

This cleaner worked exactly as advertised. After using it, my vehicle ran smoother and felt more responsive. It was easy to use and gave me confidence that my fuel and catalytic system were being properly maintained. Great product!"

Before I knew my catalytic converters were all the way degraded, I had a p0430 code that I wanted to try to eliminate. I read that Liqui Moly's cleaner is effective, so I gave it a try. It worked for a good 1K miles, so if you need to pass emissions, this might work for you. The p0430 returned, but thankfully I don't live in a emissions testing county. If you have any oil leaks, especially valve cover gaskets, do not do the "Italian tuneup", where you drive the hell out of the car with just Liqui Moly in the tank (or just about). That was a disaster and oil mist got on everything, making a manageable situation far worse. Follow the instructions and drive the car as usual.

No snake oil here this product is the real deal. I was very skeptical when my 2005 Honda CR-V started throwing the dreaded P0420 code. For about six months, I kept resetting the check engine light, only to have it come back every time. After reading the reviews, I decided to give this product a try. To be clear, it wasn’t an instant fix. I used the entire bottle and ran 93-octane premium fuel as reviews directed. It took about two to three full tank refills before I noticed the difference but eventually the P0420 code disappeared and hasn’t returned. If you’re expecting overnight results, this probably isn’t for you. In my experience, it takes some time to work, but it was well worth the patience.

I tried this mainly to clean my cats. It sadly didn't work for that at all. It did however work great as a basic fuel system cleaner. It smoothed out my idle and cleaned my O2 sensors they were a bit lazy before using this product now they switch fast like they are supposed too. In terms of my recommendation I say use as a fuel system cleaner. Or if your cats aren't too clogged in my case I bought an old neglected used car that likely had that problem for years. So I don't think any pour in tank cleaner would work in my case. However if your car just started having cat issues. This might work?? I think it's worth a try at least and isn't much more expensive than a basic fuel system cleaner so why not?

This is a great product...

Check engine light with P0420 code on 2014 Altima, put Moly in with 1/3 tank of fuel then filled up, did city and freeway driving, check light turned off after a few days. Drove the car another 100 miles to allow car computer to reset, took in to smog and passed. Worked like a charm. Will definitely use again.

It works really well. I used it on quarter tank and drove about 6 miles then filled up with top tier gas and my MPG went up by 3 miles on Highway and about 2 MPG city driving. At first there may be slight hesitation as it clears carbon. Then runs smooth as silk.

Inspection on my car due the end of January! My check engine light was coming on so I checked with a code reader & found it was a P0420. Read about the Catalytic Converter System possibly being in need of replacement or perhaps clogged. I am a woman, and know next to ZERO about cars, but I can read. Did investigate and found that the replacement of a Catalytic Converter system is mad expensive- also found this Moly Cleaner to add to gas tank. I'm not going to lie; I was nervous as I have a Kia Rio 2014 that has a very small gas tank and gets great gas mileage. In reading the consensus seemed to be to add to 1/4 tank of gas and drive fast for good periods of time to blow out the clog (if it was a clog). Did I mention I live in NYC and driving for long periods of time at high speeds can be a problem because of terrible traffic. Anyhow, this Saturday I poured the can into my 1/2 filled tank and hit a parkway near my home early morning. I did drive for 45 miles sometimes at 80mph then 60mph but tried to do it for a good few minutes at a time without getting pulled over. Checked my reader again, and it was not quite ready but the engine light did stay off. Next day, drove to work, stuck in traffic somewhat & never made it over 20mph & checked my reader again- all good to go for inspection. Went last night- my car PASSED and got that sticker in my window- so I am good for another year. The BEST money I have spent all year. Thank you for carrying this product! Saved me thousands! DONT HESITATE TO USE THIS. The hardest part for me was removing the cap on the can!

Verwende es seit 2 Jahren alle 5000km bies jetzt ok

This product solved a long-running issue that even Ford couldn't fix. My engine warning indicator was constantly on, causing terrible pickup and low mileage. I wasted 16k + labor replacing the catalyst sensor, and it still didn't fix the problem. ​Bought this as a last resort, and it worked like magic. It’s been nearly 2k km now—zero warning lights and absolutely no performance issues. Highly recommend!

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