Rainboe,
All I can say is that your company has an interesting fuel policy if your wing tanks will top-off with 1500kgs on a turnaround!!!!
Also why would -25C be a problem, do you have any idea what the minimum fuel temperatures are???
By the way. Congratulations on all of your experience. Some people have 20000 hours experience and others have 100 hours experience 200 times over.
Like I said, fuel icing, rubbish.
Over and out.