Wynn's 25692 Catalytic Converter & Oxygen Sensor Cleaner 500ml, Black

Brilliant , cleared the engine light on our Jazz , very happy

Incredible result. Poored a bottle on a full tank and 50 miles later my obd scanner found 0 issues. Before had catalyst and o2 sensor faults + engine light. To be honest i 1st used on a full tank the wynns blue bottle, seen a bit of better response on the throttle but errors didnt go away. Second refill with the black bottle sorted out everything.

Worked well but have to keep doing it every few months

Unable to use as CAT had failed

After experiencing an engine management light related to the catalytic converter, I initially tried alternative cleaning products. These provided only short-term improvement, with the warning light reappearing within a few days. I then applied Wynn's 25692 Catalytic Converter & Oxygen Sensor Cleaner (500ml), and after clearing the fault code, the issue has not returned. The product has so far delivered consistent and reliable results, making it a more effective solution compared to others I have tested.

Whilst I got exceptionally good emissions results, like 34 ppm out of 330 allowed and the car is running really well It did not fully clean up the Oxygen sensor that was dirtied by a spark plug pencil coil coming loose. I still get a hesitation on acceleration if I give it full throttle quickly. Accelerate gently till half speed, 3000 Rpm and then give it the rest and it goes well. This is on a 21 year old Renault 1.8L Scenic. I will have to bite the bullet and change the sensor but it is a PITA to get to. The Wynn's petrol clean extreme is really good and has extinguished MIL lights on my other Scenic. The fault log on Torque is showing a faulty up stream Oxygen Sensor, hence trying this first. It is most definitely worth a go first before major surgery.

Got rid of engine management light that had come on and noticeably better performance, well worth the money.

This damaged my catalytic convertor and oxygen sensors, so they had to be replaced with new ones, cost me over £ 2900 for my hyundai i30.

O produto chegou antes do prazo mínimo estabelecido.👍 É importante salientar que apesar de prometer limpeza de catalisador e sonda lambda, existem casos que não há milagre e somente a troca da peça defeituosa vai resolver seu problema. Mas por R$90 contra R$1200 em um novo catalisador, posso afirmar que após 100km rodados com o produto no tanque do veículo, obtive uma melhora de performance substancial. Veículo: Ford Fiesta 1.6 Rocam 2012 Falha: Baixa performance de catalisador / Luz espia acesa no painel / Fraqueza nas acelerações e alto consumo (5.5Km/L) Wynns foi aplicado em 3/4 de tanque e usado veículo em perímetro misto urbano/estrada , sempre deixando as rotações médias acima de 2500rpm. Retomada força nas acelerações retornaram após os primeiro 25km percorridos, a luz espia apagou e o consumo está na média de 8.5Km/L.

Amazing

After using this in the gas exactly as the directions say, a clear difference could eventually be felt in the power of the engine. I bought a second one and repeated the treatment for best results. I can't see in the converter but overall this product worked.

Très efficace ça m’a complètement aider avec mon problème de catalyseur. Je recommande

ITS BEEN A WEEK and the car appears to be doing well.