redpanda wrote:
sometimes my fuel goes up, so i have "over" in the display.
I am not sure what i did, and i can't find it in the rules.
Can anyone please explain.
I can't explain it and I frequently can play the first few turns without my fuel going down - I've presumed it happens to everyone so have said nothing.
Isn't that the case?

If you're playing a multiple fuel capacity option scenario, you may see this happen as I think 70 fuel units is the maximum that can be displayed.