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.

Ease of use:Easy to use

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.

a good purchase. item as described. did the job. good price

Average

It works as advertised

Took the engine light off on my car