Welcome back in my garage.
Today I will show you how I change the diff oil on my C63s.
As the 205 C63s(and 205 C63) has a limited slip differential, you need oil specific for LSD.
Gear oil 75w-140 MB235.61 certified(LSD)
1.2 liter is needed
Part numbers:
Fill Plug A0019902317
Drain plug A0019902317
Thread Sealant
Torque Specs for both plugs is 50NM