You're right

I'm always the first one out and if not I'm always fighting my way through traffic... track racing is boring... obstacle racing is a lot more fun :wink:
Yes, I think octane has a direct effect with fuel consumption but I doubt it is that much as the difference between my car and most others is close to 50%, only Scott says he had similar numbers. I only fill up on the same Texaco station, one owned by a close friend. Texaco fuels here are imported from the US and they say it is 97, all other fuels are refined here and I don't trust them.
What rpm's do you normally run your car...??
When they did the software upgrade they also changed the fuel lines complete from the tank to the engine... they told me it was a recall made by the factory on all 2004 CC... I was under the car with the mechanic while he did the change and we checked thoroughly for leaks and it was OK, also I think that if it was a leak it would smell and it does not smells at all so I think a leak is out of the question...
I'll fill up and clear the trip meter today and be watching it very closely on the next tank.