Hello, does anyone have experience with Cera Tune ceramic engine coating? I bought it because my Volvo V40 GDI engine is particularly on-stand. According to Volvo, the noise of the GDI engine would be normal.According to a phone call with a very competent engineer from Cera Tune, the noise would disappear if you used Cera Tune ceramic engine coating. I look forward to your answers. Gruss Labrador 68