Full throttle XC D5

Hello you moose driver, have another question for the entry phase of my XC 90 D5. I drove now approx. 1000km and would now like to know from when I can fully burden him. I have not received any condensed advice so far. Would you be very grateful if your moose tested user could tell me this. Would also like to know where the final speed is. (not chipped). Greetings from Micha XC