I have a 09’ Murano that wont go after putting in Drive or Reverse. Just revs up but dont move. I'd like to point out I didnt have this problem til I had a cracked head problem fixed with this sealant (as shown in pic). Do u think these 2 problems are linked or this acceleration problem is separate. Should I have my transmission fluid replaced after the “sealant job". Since we did see the oil was milky too. Any suggestions please??