Having the PTU replaced on my 2020 3.0 14950 miles... started a slight vibration and rumble a few weeks ago.. not my first MKZ so I knew something was not right... I thought it was a motor mount at first, but dealer test drove and they came the conclusion that it was the PTU .. part was ordered and should have my car back Monday .. Wanted to know if there would be a break in period for the PTU or can I just drive normally ?