Catalytic Converter Cleaner Pass Emissions Test Cleans Catalyst, Oxygen sensor and combustion chamber cleaner, fuel additive

Bad coil on a 1999 V6 Toyota Solara coupe with 235,000 miles caused check engine light to come on (occasionally flashing) and engine to run rough for months. P0300 "multiple misfire" OBD code. Got progressively worse. Finally replaced the coil cuz a smog check was required for upcoming registration. Replacing the coil fixed the issue. Engine runs great. Check engine light was reset and did not come back, but smog check failed.Used this with 1/4 tank and drove til nearly empty to get rid of as much additive as possible, then added half a tank of top tier premium and drove for 1 hour.Passed smog by a wide margin.I can't confirm this product actually did anything, maybe the car just needed to be driven hard to clear out the carbon but you can't argue with the result!Oh yeah, recommended to a friend with a Kia mini van that wouldn't pass smog and also had a check engine light. Same procedure worked for him too.

Took the engine light off on my car

It works but, if the the converter is clogged bad, it’ll break up the particles and shoot it all over the O2 sensor. It may take more than one bottle but it works. Notable increase in performance….right before a jig saw. ☺️

Didn't work for me. zero results. And here's the thing, it's a for sure sale for the company because how do you refund it? You don't. Once it's added to your gasoline, it's yours, whether it works or not.

I bought a Dodge Grand Caravan that had an intermittent P0420 code. It would come on, stay on for a while, then go off and the cycle would repeat itself. I did some research and decided it wouldn't hurt to try this before i did a major repair. I added this to a tank of E85 (mine is flex fuel, use what your engine recommends!) and after a few drive cycles, the code went away for good. It's been 6 weeks and I passed emissions.

Average

I used two bottles. One with each 22 gallon fill up. I bought my Nissan 2005 Maxima with the check engine light on, 9 years ago. According to the emissions test, it needs both catalytic convertors replaced. Yet, in 9 years I haven't had to because every 2 years I add this to my tank, 2 weeks prior to going to get the car checked and it passes. Now, instead of regular gas, I use premium in conjunction to using this stuff. If you don't pass the emissions test in Illinois, your plates are NOT renewed. It worked. The check engine disappeared and I passed. The light came back on today, but I passed and already have my MAY 2026 plate sticker. IT WORKS!!

Check engine light came on, I used my scanner and pulled the P0420 code. I left the light on. I added the full can to about 1/2 tank of gas (7-8 gallons). Drove the car for about 60 miles and the light went out . Car passed Virginia emissions test 2 hours ago. Be patient, but it worked for me in six days Very Happy!