He watched practice, talked with some of the players and met with members of the coaching staff, including head coach Greg Schiano. Then, he was candid in discussing his recruitment.
"I've seen the facilities plenty of times, but I got to talk to all the coaches again and some of the players, the guys I would probably be around (if) I come in,'' Mangiro said. "(Offensive line) coach (Kyle) Flood, (linebackers) coach (Bob) Fraser and coach Schiano are my main recruiters. They're all good guys, and good guys to be around.''
Mangiro moved to allay any talk he was giving Rutgers nothing more than a courtesy home-state look by saying it is one of three programs he knows he will visit again in June. Penn State and Ohio State are the other two, and he is trying to schedule another trip to Pittsburgh.
"I'm very interested in Rutgers,'' Mangiro said. "It's close to home, my family could come to all the games, I'm very family-oriented, so there is that aspect.
"On the other side, I'm not going to shy away from a school that's six, eight hours away. If I feel like the school is right for me, I'm not going to be afraid to go there. My family told me they would come out to see me play.
"But I'm born in Jersey, I've lived here my whole life, and definitely that's who I am. So, it would be nice to have that around me during my four years of college.''
The intrigue surrounding the 6-foot-4, 295-pounder is whether any school can beat out childhood favorite Penn State, which offered Mangiro earlier this month.
Until then, Penn State was on his radar, but how serious of a choice could the Nittany Lions be if they didn't offer? But once Penn State offered, it changed the landscape of Mangiro's recruitment.
But there was a perception he was awaiting for a Penn State offer, and that is held special meaning for him.
So, what that accurate?>
"A little bit,'' he said. "I visited Penn State for a game, so I could get a feel for the campus and everything. Penn State was my school growing up. I always liked Penn State. Ya' know, Joe Paterno is an Italian coach, and I always liked that. Coach Schiano is an Italian coach. I guess that works out, too.''
During his visit to Rutgers, one of the pressing questions he had was whether Schiano would remain at the school throughout his tenure.
"Basically, he said he turned down many job opportunities,'' Mangiro said. "He said this is where he wants to be, this is where he wants to stay the rest of his career.
"To be honest, I believed him. I always talk with my friends about this stuff, that when I have a gut feeling, it usually comes true, and I have a gut feeling he was right in what he was saying.''
Conversely is the Penn State situation. Nittany Lions coach Joe Paterno will be 84 when Mangiro is a freshman, but Paterno's stature in the game is causing Mangiro to look at that situation in a different way.
"Do I have the opportunity to go play for a legend for one or two years? You could say that,'' Mangiro said. "And then a university like Penn State, they have things organized as a coaching staff there. They have coaches that have been there for 15 years. Dick Anderson has been there for I don't know how long. A lot of their assistant coaches have been there for a while, so if there was a coaching change, I feel like I would be comfortable there.''
There is plenty for Mangiro to think about, and he is uncertain if he will have enough time to explore and investigate everything in time to make a decision before his senior season.
"I want to get to a top three, four …and hit those schools up and go there again,'' Mangiro said. "Check out a day or two there, get a feel for what the players are like, sit with the coaches, go to some meetings, maybe try to go to classes with some of the kids.
"By the start of the season, have a top three and just go for some visits to those three schools and try to make decision. I really don't want to make it during my season. Maybe during the first couple weeks of the season, or maybe after my season.''