hvogt, the refueller's 100Kg reset is common in my company. I thought it was done because the system sometimes stops the refuel before the required amount is present due to the fuel level settling after delivery, not due to an error on the indications (which I doubt exists). There are some skippers who'll get very het up if they get 20 or 30Kg less than they asked for and bawl the fueller out, so some of them up the quantity by 100 to avoid the unpleasantness.