[Gunter]

KNS said it:
On a stock 3.2 expect about 10 liters total to come out of tank and engine.
About 7-8 liters from the tank,
2-3 liters from the engine.
Some oil (1-2 liters) will remain in the external lines and front cooler; that's alright.
Keep some rags handy.
Lift the car securely, place the large pan under the tank, use gloves and open the plug, the hot oil will shoot out pretty fast, use gloves!
Next drain the engine.
Clean out the magnetic plug; some very fine guck is normal.
I use magnetic plugs on both engine and tank.
Use new seals or re-use the old ones. (I have re-used the old ones for years)
Put some rags under the filter and emove, clean up any spills.

Install new filter and fill with about 9-10 liters, no more.
Then warm up the engine with a drive and check the level; half way is good.