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

I have a 2015 Honda CRV that the PCV valve had to be replaced. The valve was dumping oil. Replaced the PCV valve but then about a month after check engine light came on for catalytic converter issues.I looked around for potential remedies. Came across the MotorPower catalytic converter cleaner product. Saw it has some good reviews. I was a bit skeptical but figured $30 for the 2 pack was worth a shot versus replacing the catalytic converter rigyt away.I followed the instructions by letting gas to a lower level, pouting in the first bottle and filling tank. About a third way through the first bottle the check engine light went out on its own. I did run the next bottle through as well on the next tank fill up as a added precaution. I should have ran it through right after the PCV valve replacement but non the less the issue appears to be rssolved and this product worked very well.I will be using regularly on my vehicles as part of the maintenance now. Thank you

Honda Ridgeline with 140.000 miles. Had an issue with a misfire on 2 cylinders which I resolved (be careful of aftermarket spark packs - 2 out of 6 I purchased were bad). Once misfire was resolved the check engine light indicated that the catalytic converter for that bank of cylinders was bad. I bought this stuff hoping to avoid replacing the converter for a while longer. First can on 1/2 tank achieved nothing. Check engine light went out on its own after the 2nd can on 1/2 tank.

I have a bad catalytic converter with a p0420 code. An insurance repair that is taking time to get parts. Got this product more for the cleaning properties than clearing the code. I used the full tank with ultra 93 gas on the first part of the 600+ mile road trip. I definitely see a difference in performance and got better gas mileage. The code didn't go away but I also didn't expect it too based on the configuration. I only used the one can and saving the second for another road trip.

I am revising my review. The product worked initially, then code came back, and now codes gone again after driving it a few days. So I guess it has worked better than I thought when codes came back. Not sure but I will monitor and revise again if needed.

I'm very happy with the effectiveness of this product. And getting my tank down to a 1/4 tank and adding this product. Then driving 20 to 30 miles is key. Immediately afterwards filling the tank. The difference in the way the car drives was a releaf for me. I will buy this product again either through Amazon or if i could find it locally.

This is the second product of this type I have used to try and address an oxygen sensor issue with my older car. The last one took 2 treatments and lasted just long enough to get me through my smog check then the light came back on. This one cleared the code almost immediately. I haven’t been driving long enough after the treatment to know if it will last longer, but I will update in a couple months.

Didn't work....

bought a new (to me) car and was told cats needed to be replaced. the first thing I tried was cataclean, didn't work. next I tried some other autozone cat cleaner and it still didn't work. I searched here on amazon for catalytic converter cleaner, found this and dumped both bottles into my nearly empty gas tank. did my usual hot soak, involving running high RPMs on the freeway then let the car sit overnight. filled up my tank with gas the next day (mixing it with the 2 bottles of this stuff) and proceeded to drive as usual until the tank was empty. just today on my way to class I noticed my check engine light was off and upon scanning for codes i discovered both my P0420 and P0430 codes have gone away. now this is great but I will give it another week to see if the codes return, but as of right now this stuff is gold. I recommend.

Reasonable price for the quality, the content can be mixed with 1 fuel tank it is much easier to use compared than others that need to be mixed with quarter tank and driven to 50 miles.

VALUE FOR THE MONEY , The most easiest and SAFEST Way to CLEAN YOUR ENTITE Fuel System ONCE and DONE!