This is turning into an absolute saga. So...I got my ECU repaired as the car was lacking power and every other possibility I had tried to fix. Maf etc, everything that the codes said. Got the ECU fixed and the lacking power issue wasnt there for a day. The it slowly came back. Just done an oil change and took it for a spin, the issue is still there. I checked the coolant and noticed that there is oil in there. Could this be the new issue causing the lack of power?