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

I notice less smoke after using this. The build quality of these things are great. The value for the money was very well spent. It was very easy to use and put into your gas tank. This gave me a brighter idea of how my catalytic converter will last even longer. PO420 code has disappeared by itself, haven’t seen it for months. I plan to buy and add another one of these bad boys near the end of the year.

Increased fuel economy by 4+mpgP0420 never returnedSome cars will be too far gone for this product to work, which is why theres still some.bad reviews. This product is tried and true to keep your vehicle at peak performance. Use it BEFORE you need it. You will be thankful later when $20 will save you from spending $200-2000. Oil is cheap engines are not

Got a catalytic converter low efficiency code? (P0420 or P0430 - most often) For the price, this is worth a shot. Something not mentioned in the directions that will help this work better: Use it over longer trips so that your catalytic converter has a chance to get up to, and run at operating temperature with this coming through the fuel system. If you add this and then only take short trips, it's not going to be very effective.Also note that the P0420/0430 code often can't be cleared manually, and usually requires one or more successful catalytic self-tests to execute before the code clears. The vehicle usually needs to be ran for at least 20-30 minutes before the test begins.In my case it worked, but the code was just on the edge of cycling on and off over the course of several trips, meaning that the self-test was passing half of the time before treatment.

My 2011 Ford fiesta threw a check engine light, got the p420 code, and I let it go for about 6 months. Once I started losing power and had some rough starts, I decided to give this product a try. I figured because I let it go for awhile, it might need more than one treatment. I used 3 cans in three fill ups and the check engine light went away. Thussofar it's still off, I used one more can just to play it safe. I will edit my review if it turns on again, and will note the amount of time that it took to turn back on. As of now, it's been off for a week

2015 GMC Sierra 170k P0430It turned off the engine check light just for 5 days and 600 miles…Anyway it worked to turn it off, just for a while though.

This did exactly what it said it would do. I poured it in and within the first drive the code went out. Now I did have a persistent issue whereby my turbo oil was burning into my manifold so it came back and no amount of cleaner would fix that, however, once I repaired the issue, I used a second can and it cleaned the sensor. The issue did not come back. This is a great product, the smell isn't too bad, except when you pour it it smells like rubbing alcohol. Be mindful when you pour it that it may splash back o the car if the nozzle is not seated inside the gas hole. By it drained right in. The casing was very strong and durable and the quality of the packaging was very bright. Not that that matters to normal folk but it assisted with identification at first.

The media could not be loaded. My car has 150k original miles and ran good with no issues . the catalytic converter was starting to stink so I bought this stuff !! Big mistake ! Don’t buy it. My car is running like crap , the check engine light is on and when I drive it starts flashing which is a really bad sign.

This product was amazing, my car with 401,000 miles passed an emission test easily after using it. I would recommend it surpassed my expectations.