Maybe it's not such a noob question after all. I thought pit stall as well but it changed from 8 to 14 during "test day" so not sure, could just be something quirky. Doesn't seem like it, I could be wrong though. Hopefully Tim will see this since I know he races and I'm sure he talks to the devs. at least once in awhile so, here's to hoping he knows.
Number of laps before fuel empty, as per garage setup. So it will be the next scheduled stop or est. fuel left.
I don't know :-( I think Tim will have to clarify that point. I believe when looking at it, it is a real time estimate. So it seems to get more accurate with less fuel. So if it says 1 ... I think you had better be making you way in that lap unless you just passed the pits But that is up to you. That's how I see it anyway...
Check the ltrs left. That will let you know how accurate it is. If you have that information Can't remember what standard information you can see.