Liqui Moly 3721 Cera Tec, 300 ml (Automotive)
First the basics: The Ceratec was my Opel engine (1.6 l; 106HP; 148tkm) added, the ansich going very well, a little grinding noises were (last oil change before about 13tkm). To only be able to assess the impact of Ceratec, no oil change was performe