Mercedes-Benz 300D 2.5 1990 Owner's Manual page 8

Check Regularly and
Before a Long Trip
See page 116
8
The First 1500 km (1000 Miles)
The more cautiously you treat your
vehicle during the break-in period, the
more satisfied you will be with its
performance later on. Therefore, drive
your vehicle during the first 1500 km
(1000 miles) at moderate vehicle and
engine speeds.
During this period, avoid heavy loads
(full throttle driving) and high RPM (no
more than 2/3 of maximum permissible
speed in each gear as indicated on
the speedometer).
Avoid accelerating by kickdown. It is
not recommended to brake the vehi­
cle by manually shifting to a lower
gear. We recommend to select posi­
tions "3 " or "2" only at moderate
speeds (for hill driving).
After 1500 km (1000 miles) speeds
may gradually be increased to the
permissible maximum.