MotorKote Catalytic and Exhaust Treatment | 16 oz., 6-Pack

It was used to help pass emissions test.hopefully all goes well.

My 2006 Honda Insight was running very rough and missing. I had it looked at at the local garage, and they hooked up the analyzer and it said that the catalytic convertor seemed bad, and also the oxygen sensors.After running most of the cleaner through it, it seems to be running much better. I had never heard of a catalytic cleaner. Hope that takes care of it, as the Insight is the most economical running car that I have ever had. It has 220,000 + miles on it now, with 57+ mpg lifetime. I bought it with 104,000 miles on it with 56 mpg lifetime. So, it has been making over 58 mpg since I have owned it. I knew that a new catalytic convertor would be expensive, but found that the oxygen sensors were even more expensive. So, crossing my fingers that this takes care of it lol

The only way to turn off the check in light is with a scanner ! My Explorer has the catalytic converter low emission check engine light code . My scanner will turn it off for 70 miles but until you fix the problem you live with the light !

O2 sensor code never came back. Worked for me!

Has not fixed the issue with catalytic converters

I need alittle time for a complet evaluation

It turned off long enough for me to get my inspection sticker.

Used this on several of my cars with the P0420 code. It worked almost every single time, just follow the directions and don't fill up your gas tank until you are close to empty.This wont fix mechanical problems; but it's probably the best chemical cleaner out there for cats that doesn't involve taking them off and washing them.EDIT:Where I live the smog requirements changed for classic vehicles. I was now forced to register my 1991 Hardbody truck with a smog check. I take very good care of it, but since the car has past the 200k mile point and nissian is known for making shitty catalytic converters; I gave this another shot.Truck passed with flying colors. Not sure what is in this stuff; but the people making it sure as hell know what they are doing.I'm also not sure how the 100% guarantee works. This can't fix mechanical problems; so if it doesn't work your vehicle has a mechanical problem.