2009 through about 2012 5.7 is what I have seen and as low as 101,000 mileson up to my 2011 with almost 300,000 miles. Never an earlier one, no 6.1, 6.2< or 6.4 either flavor. Anything newer is probably ending up at the dealer so I don't know if it's a continuing issue or if they fixed it yet. I am looking for a decent 1/2 ton 4 door 09+ I can buy cheap and swap in my 6.4.