I’m Wouter, and I have a Volkswagen Golf GTI 1.8 20vt from 1999, with approximately 200 hp. When I bought this car, there was already some 246,000 km on the clock, but she still ran pretty neat. Before I serviced the car, I came thanks to Kees in touch with Polytron. He explained to me the operation of this product, which makes me very excited. My GTI consumed some oil, and the motor also made some noise (in addition to stainless steel exhaust so). After I had used Polytron engine oil, I quickly noticed that the engine made considerably less noise than before. The engine still leaking a little oil, but this is certainly a lot less than before. I have a Volkswagen Lupo 3 l, this should be serviced soon. I will definitely use Polytron again!