I found a bug with the fuelcalculation. I played DTM 2016 and insert 90 Liters. Later when 27 Liter left Crewchief play sound "You have half of fuel left"
I have also one experience of a 10 min race where my fuel ended some 1km before finish and Crewchief did not warn me in any way (wasn't angry, I understood he can't know *everything* ) oops went in wrong section, found this thread using "search", but I was playing AC...