Now, now, that's not fair . . I do admit that I am anal about stuff, but, when it comes to how expensive stuff is, I'd rather be anal than broke. And, I'd rather spend my hard earned cash on mods, not replacing stock parts with stock ones that have failure rates that should not be. We see that also with those poorly designed injectors and fuel related issues, but it does lend itself to doing performance mods, and once you have gotten into those, your truck will be much better and you will be much happier.
The first addition I made at a couple days of ownership was to add gauges. I have from day 1 of ownership taken the time to make sure my turbo is cooled down, I do not shut down until my EGT's are right at or under 300*s, and usually more like 275*s. I also change my oil religiously, have a bypass filter, oil cannot be in better condition when being drained as compared to a lot of people I know. I have run the factory recommended Valvoline Premium Blue, and I oil test at each change (more of that anal stuff). My test results have always been excellent, so no contributing factors like silicone or soot.
Maybe living/driving at high altitudes is harder on turbos?? I am at 7K ft elevation and drive a lot up to 10K ft elevation, but also go down to 1500ft elevations a lot too. While at high elevation our summer temps are right around 80*s, when I am running around at the low elevations I easily am driving a lot at 105-110*s, and that could play a role also. And then comes the towing, I do a lot of towing, and more often than not the loads are right at 18K or more with many steep grades.
I guess the 325 engine is a little different in performance demands than it's predecessors, I do know that there are quite a few differences in the factory programming, maybe that has to do with it too?? Plus, in the first year or two my dealership made sure I was getting all the latest flashes, their explination was that they were getting the bugs out of stuff that was problematic to performance. When I think about those turbo failures that I know about, all of them are people who tow a lot and also tow heavy, maybe they needed to use a different turbo?? and I wonder how that 3rd injector event might play a role??
I did notice that the new turbo sounded very different than the original one, actually quite a bit different. I can also say that my EGT's have always been somewhat high, or higher than many others report when discussing them, and reading threads seemed to me that many of the 2006 owners were experiencing the same. And also, it seems like more 2006's and 2007's have melted pistons more frequently also.
The high EGT's have always concerned me, so much that I went to twins to get them under control, and the twins DID bring them down considerably. Less gauge watching now, less worry, and hopefully more longevity, since we all know that excessive heat is what does engine life in the fastest.
My dealer told me that they had many 2006 trucks with the same type of turbo issues mine had, probably was some kind of mfr defect since the numbers were fairlly high. Since my local dealer is also at high altitude, maybe they were referring to the local trucks?? That would make sense since most that I know who have had issues are my fellow locals. But there have been others at much lower altitudes with this failure also, one fellow was told ny his dealership that his PacBrake was responsible for his early failure. If the PacBrake caused it, then I would say that any exhaust brake could cause it, and I wonder how many factory brakes have been responsible too.
TCDiesel - do they make turbo wax ?? . . might have to get me some, eh?
CD
Attention: TDR Forum Junkies 
? Just kidding, could you explain that to me a little more or tell me where to go to find out more about it? I usually let off on the accelerator slowly. When I first discovered this noise, I was passing a slow car on the interstate and they pulled into my lane right infront of me so I had to let off the accel. abruptly. After that, I tried to get the truck to make the same noise and found that I could. I've had 4 diesels in the last 10 years, (two 7. 3 powerstrokes and two 5. 9's) and thought I knew how to drive them, maybe I don't. 
