CF 
2008 Nissan Sentra Sedan 2.0 SL 4dr Sedan (2.0L 4cyl CVT)
Grinding Parts
 My 2008 Sentra has 25,000 miles and just took it in to the dealership because seems to downshift with difficulty, and also because of grinding/scratching sound coming from transmission (or engine)?   Nissan Dealer agrees that he hears the grinding sound, but says this is NORMAL.  What?  Normal to hear parts scraping or grinding?  Are you kidding me?  Great, now what do I do?      