From 1994, the Power Stroke engine family existed as a re-branding of engines produced by Navistar International, sharing engines with its medium-duty truck lines. Since the 2010 introduction of the 6.7 L PowerStroke V8, Ford has designed and produced its own diesel engines. During its production, the PowerStroke engine range has been marketed against large-block V8 (and V10) gasoline engines along with the General Motors Duramax V8 and the Dodge Cummins B-Series inline-six.

Answer this question based on the passage: when did ford come out with the 6.7? Let's have some stream of consciousness first.
This is the relevant information: Since the 2010 introduction of the 6.7 L PowerStroke V8, Ford has designed and produced its own diesel engines. So, the answer is 2010.