Now that I'm starting to do some miles, what is the typical oil usage on an N52B25 engine? I've done 5k since Valdas did some work and serviced it for me and the oil level has just come 1 notch off the max indicator mark on the OBC.

Does anyone bother with mid service top ups to keep the oil level at max, if so at what point should the top up occur?

Finally does anyone recall how much in litres between the max and min from the OBC readout? I've read around 1L but want to be sure.