In case you missed it in your Owner's Manual

"The more cautiously you treat your vehicle
during the break-in period, the more satisfied
you will be with its performance later on."

Drive your vehicle during the first
1000 miles (1500 km) at varying but
moderate vehicle and engine speeds.

During this period, avoid heavy loads
(full throttle driving) and excessive engine
speeds (no more than 2/3 of
maximum rpm in each gear).

Avoid accelerating by kick-down.

Do not attempt to slow the vehicle
down by shifting to a lower gear using
the selector lever.

Select positions 3, 2 or 1 only when
driving at moderate speeds (for hill
driving).

Additional instructions for AMG vehicles:

All of the above, as may apply to your vehicle
type, also apply when driving the first
1000 miles (1500 km) after the engine or
the rear differential has been replaced."