OXICAT- Oxygen Sensor, Catalytic Converter, & Turbocharger Cleaner -Pack of 2 FOR PREVENTIVE MAINTENANCE (500mL)

Had a O2 sensor acting strange in my Toyota rav 4. Got it checked out and it had some carbon in the sensor. This Oxicat cured the problem. I will use this product when I have O2 sensor problems.

Seems to work - not sure yet

Oxicat works well. Catalytic converter system was very dirty. Replaced one of two converters, and both O2 sensors. The dreaded check-engine light kept coming on and off. Used several Oxicat applications over the coarse of about six months, did the trick, light off now for several weeks. Last purchase for annual maintenance.

Had rough idle, misfire cylinder 3, would barely run. Added one can of OXICAT to the tank. Followed the instructions, drove on the freeway and about 60 miles in the truck was running smoothly and codes cleared. Around 1400 miles and still running smoothly. Definitely recommend.

Very disappointing. We’ve used two cans; each time, our check engine light turned off after three days of adding it to a fresh tank of gas, but, both times, the light turned back on after only three or four days. The German manufacturer isolates itself from its customers by directing all attempts to contact them back to Amazon, and Amazon, of course, is notoriously opaque and inaccessible to its customers. I want somebody to explain to me why this product only appears to work for four days and whether or not additional treatments will be of any use, but there is literally nobody to ask. Is the only point of this product to turn off your check engine light long enough to get your car inspected? Really? That is not acceptable.