I have a Mercedes B class diesel 2010. I have had it since August 2015 from a dealer who serviced it, and everything is running fine. I have noticed a warning saying drop oil level, so I measured the oil and it's just over the full dipstick mark. I've been getting this warning for 2 weeks now, do have I anything to worry about? Will the problem go away on its own or do I need to do anything?
I have checked the dipstick and the oil is just over the top mark ,the oil looks ok (black) no foam etc and no smoke from exhaust the warning sign comes on when on long drives (on rare occasions)