I've always found,7.7lts, to be the sweet spot when doing oil & filter.
To do a routine oil check, as soon as I shut it down,
Remove the dip stick,
Wipe it,
Re-Insert it 3/4 of the way,
Wait 10-15 mins,
Push it all the way home, leave it there for 5sec and I get an accurate level check each and every time, always on the max mark,
but I have to agree you really only get one shot at it