I have a friend who is an owner/mechanic. He won't work on 4.7 if it comes to anything internal. The Germans made everything so complicated and he says that many start having problems around 100-125 thousand. He is a die hard Mopar guy but hates 4.7. I had one that got a coolant leak and it died. I would hve fixed it if I could find a 5.2 for my 2001 Durango. He has two in Dakotas thqt both have over 200,000 miles and run great. Hope you have better luck than I did!!