This product really works! 10/17/2015
Customer review by An anonymous customer
5.0 stars 10/17/2015 by An anonymous customer
My 2004 VW Jetta started to show the check-engine sign with a code P0420 which says: ''Catalyst system efficiency below threshold bank 1''. I started looking in the internet to know what was the meaning of this and found out it was a problem with the system that regulate the exhaust emissions. Then I found this product that was supposed to clean the system and solve the problem. I poured it into my half-empty gas tank, filled the tank full and drove the car in the highway at 55-60 mph for around 20 minutes. Next time I started the car, about 2 hours ago, the check engine sign was gone! And I even feel the car run smoother. This product really worked for me, I highly recommend it!
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An anonymous customer
Would recommend to a friend? Yes