It does work for a temporary fix. Price wise is very inexpensive against other brand products that are 30 to 40 dollars or even 50 dollars that guarantee passing emission results. If you use this product for every 5 -10 full fuel tank period or more, I can say you can extend your catalytic converter life, a system with a smooth riding less noise under the hood. If it is every 2 fuel fill up, you will need a new catalytic converter. I have used it on my vehicles the last year and mileage increase has been noted.
Rating:
[5 of 5 Stars!]