Checking oil level.

[Meir]

According to the owners manual, the amount of oil needed for an oil change is 8.75 liter, including oil filter.
So in my last oil change I started with 8 liters, and kept adding up.
Using the cluster oil level display, I turn the ignition on and wait for the timer to count down. The display shows two lines above the minimum.
If I check the oil level with the engine cold, it gets to the top.
Same thing with the dipstick.
My first question is, what is the correct way to check the level? Hot or cold?
I know the manual say "operating temperature" but I already have 9.25 liter in it, and measuring based on the timer, shows I need another liter.
Q2: I did replaced the IMSB, and remove the oil cooler and the oil sump cover.
So the engine "lost" more oil then in a regular oil change. Dose anyone know if that should make a difference?
Also curios to know what is the amount of oil that goes into a "dry" engine (after a rebuild for example)
Thanks in advance.
Meir.