At first, it seemed like it didn't work at all as after a forced regeneration, the DPF blockage percentage dropped from 69% to 67%.

However, after about 1000 km, the blockage percentage has dropped to 25%.
Therefore, the product worked exceptionally well!

Owner of opel corsa D diesel I bought it preventively to clean the dpf (175000km) as much as possible because lately it regenerates about every 150km within the city, I'm not sure about the result but I'm sure about two things it emitted a lot of smoke (white smoke) about 8 to 10 times more than it does in a regular regeneration and that I feel the car a bit more airy in its acceleration. The application was done on the upper sensor of the dpf emptying all the spray in a warm car, I left it for a quarter to sit and then I drove with at least 2000 rpm and above. PS it is good to do it somewhere outside the city because you will be quite annoying due to the white smoke and the strong smell!!

The check engine light was on and it was showing three codes, all related to the lambda sensor in the Leon mk2. I installed it together with the Protec P1180, cleared the light with an OBD through my mobile phone, and I have driven around 400 km without it coming back on!! (Note: be careful during use, as it accidentally came into contact with the liquid and left some marks on the surface.)