just got back from a long trip.. on the way using caltex vortex i got 735k on one tank and the reserve light was just starting to come on.... avg fuel was about 9.1, sitting on 118kph on cruise (in a 110 zone too) . Wasnt going to risk tryin to get to the next town on reserve. Not so good on the way home.. further west i went, the worse the fuel got. but thats the best effort so far..