There were four times in the Penn State game in non-garbage time situations when it was 3rd and 6 or longer, and Michigan ran the ball. (FWIW, one of those runs produced a TD.) I remembered watching a good chunk of that game and thinking that Michigan ran quite a bit when in 3rd and long. Not that it didn't make sense -- with a good ground game, a very good defense, and a lead on the road, I probably would have been inclined to run the ball more than normal in 3rd and long situations as well.
2Q 3rd and 11 at PSU22 Shotgun Edwards,Donovan rush middle for 22 yards gain to the PSU00 TOUCHDOWN, clock 06:07, 1ST DOWN.
3Q 3rd and 10 at PSU10 No Huddle-Shotgun Edwards,Donovan rush left for 6 yards gain to the PSU04 (Reed,Jaylen), out of bounds.
4Q 3rd and 6 at MIC7 Shotgun Edwards,Donovan rush right for 5 yards gain to the MICH12 (King,Kobe; Reed,Jaylen).
4Q 3rd and 10 at PSU43 Shotgun Edwards,Donovan rush middle for 1 yard loss to the PSU44 (Isaac,Adisa).
I don't know if Michigan tended to run on third and medium-to-long more than normal for the rest of the season because I didn't watch that much UM football. But the Wolverines did take the ball out of McCarthy's hands quite a bit on third and long in the Penn State game.