Hi all,
Here in Spain we have possibility to choice Gasoline between two different Octane grade, 95 and 98.
Does any one know how 98 or 95 grade can affect our engine?
I'm everytime using 98, I don't know why, I'm only suppose that more octane,more quality, more expensive, more quality or benefits for my engine, but certainly I have no idea if really there is something important for my Z8.