MotorPower Care Catalytic Converter Cleaner 2-Pack — Pass Smog & Emissions Test, Fix P0420/P0430 Check Engine Light | O2 Sensor & EGR Cleaner | Fuel Additive, 8.45 fl oz Each

It worked my 1991 Mercedes 300se with 136,000 miles was having issues it started running rough and lacked power to the point it wasn't safe to drive. At first I thought it was the 02 sensor which I replaced it ran good for about 2 days and then it started doing the same thing again , so that's when I considered looking into the catalytic converter. Then I saw this product online did some research and it looked pretty good so I decided to give it a try. I poured it intonthe tank a 1/4 just like the intructions said drove it for about 25 minutes not much changed but after 2 days of driving it around my neighborhood it worked the car runs smooth again and accelerates with plenty of power.

It works well , my check engine light came on with a bank sensor code, I added it. Had to rev the engine a couple of times drive for a few days and about the third day it went of

If you use it and see a difference, you will blame it on this cleaner, if not, you will say the product does not work. Exactly like your weight loss supplements! Who knows what this stuff does, but it may do something. Or maybe it does not.

Seems to have resolved an issue with a wavering idle for my 89 Mercedes 300e with 468,000 miles.

Brought a 2-pack thinking it's going to work. But it did not clear the check engine light . I had a exhaust valve leak which caused more damage then I thought of. But I did notice more acceleration and slightly better gas mileage .

This product WORKS, I have used it in a 2011 Outback with 205k miles and the vehicle passed the emissions. I followed the instructions and the check engine light is not illluminated.

This product did nothing for my converter issue..I use both cans and got absolutely zero difference with my problem..I would NEVER oder or use this product again..EVER!

Getting 2 codes referring to O2 sensors, bank 1 sensors 1 and 2. Was told it needs a Catalytic Converter. Read reviews and decided to try it. After the first bottle, the sensor 2 code went away. After the second bottle and some aggressive driving, the check engine went out, codes have not come back and check engine lite if off. Use them with with fuel under 1/4 tank.