you wont hurt anything unless you really over fill it.

not familure with the specifics of this diesel but

If you get so much oil in it that the crank starts to hit it and froth it up that is when you will cause damage. The oil will have all kinds of air in it going to the bearings. almost every autocross guy with a straight 6 bmw runs with a full extra quart and I do too.

The only other thing extra oil will do is cause windage and reduce power a very small amount, but for a daily driver you will never notice it.