Hi Lev
With modern engines they are pretty good to go from the start - although I still make sure that I drive in all rev ranges in the first 1000klm.
The oil in the new S550 isn't changed until the 15K service - I'll be changing mine soon, it has done 1069 klm so far.
When the cars are built, they are tested hot then sit at the dock for up to a month, then driven onto the ship, sit for another long period - lots of condensation building in the motor/oil.
Oil and filters are cheap insurance.
Cheers
J