Yep, you will have around 15 litres of fuel left at the end of the race. Worked fine for everyone in Spidey's room tonight.
For qualy we had around the 15L mark. For the 19 lap practice race I had 15.8L left. You shouldn’t have to add fuel for your stop.
if that gives the 24hr (or close to) then all good..... Also had Anne tell me that her and Arnold have had differing levels of fuel (up to 30L) in their prac races...will look at it tonight if i get the chance to get on