OXICAT- Oxygen Sensor & Catalytic Converter Cleaner-Engine, Fuel & Exhaust- Pack of 2

Been treating high mileage Hondas that my kids drive with this. It works every time on one tank, emissions light goes out before the tank is empty.Other brands are hit and miss on how many treatments you need, making this extremely cost effective. I like the attached funnel extension and easy opening containers too.

Got the dreaded Cat Conv error code on my 2014 Subaru after 150,000 miles. Used one can with a fill-up, and within days, the error code went off on its own. After two more fillups, the code came back and I used the 2nd can. Code went away in days, and has not come back - and it has been 3 months. I plan to keep using it, maybe not every month as they suggest, but every three months instead. Will revisit this review if the code comes back, but as of now, it is doing the job as advertised.

I was always told there's no such thing as a mechanic in a bottle but in this case this product did clean the cat enough to shut the check engine light off. I had to use both bottles. But it's been good for the better part of a year. Would recommend trying before replacing parts

It cleans but it doesn’t take the light away

The check engine light came on indicating an oxygen sensor or catalytic converter had an issue. First can didn't work, but I realized the gas tank full held more gasoline than the recommended amount. Made an adjustment with the second dose and it worked at about 100 miles. Light off for over a week so far. Hope it stays off.

Did not work for me

Will clean out the catalytic converter and all fuel sensors.

Didn't turn off mt engine light.