Very good product always in combination with Tunap 164 for gasoline.
Tested on dozens of models, even with very soft valves such as DAIHATSU TERIOS, which have done over 200,000 km with gas, a total of over 280,000 mixed km.
Valve adjustment was done after 150,000 km and it was found that all valves needed adjustment because they had closed.
However, the benefit in these kilometers is almost the value of a new car.
It is important to note that the installation of gas should be done correctly.