2.0 D rising oil level

People, I need your help. With my 07 C30 3.0 D the oil level is rising. I have already rummaged a bit in the net and I have come to the conclusion that there are problems with the D5 or 2.4 D there, also isolated cases with the 2 liter engine. My friend said, after consultation with Sweden, that the problem is not known and after transmission of all the values of my car I now wait for a feedback from Sweden. Well, that the net is known I can not quite believe – just because of isolated hits on the Internet – and now I ask into the illustrious round, who has heard of it or who is affected by it. quite diligent can also post, what could be the problem thank you!