Yes, its better to underfill by a little than to overfill.

On my 300TD (OM617), the capacity is listed at 7.8q, and I throw about 7 quarts in right away. Then I run the car up to temperature and drive around a bit, then top up if necessary.

peace,
sam

__________________
"That f***in' biodiesel is makin' me hungry."

1982 300TD Astral Silver w/ 250k (BIO BNZ)
2001 Aprilia SR50 Corsa Red w/ 5.5k (>100 MPG)