I've only been on here a couple of weeks due to my newly acquired 2011, and I haven't seen this mentioned yet in my readings and searchings. Are Italian tune ups an accepted way for you more experienced Prius owners to prolong EGR health? With my old '06 Sprinter I make sure to run 'er hard up a grade once in a while to get everything nice and hot, and hopefully delay the effects of a premature EGR clogging/failure by burning off some of the carbon build-up. I know this is apples/oranges as they are entirely different designs and machines, but that EGR is original at 322K, and when I pulled it off a few thousand miles ago it barely required any cleaning. Again, I know the comparison can be flawed as the variables are innumerable (mercedes vs. toyota, diesel vs. gas, etc.) but the concept could still play. I would think that clogging EGR systems at the seemingly 150K-200K mark for these 3rd gens could be exacerbated by the fact that most Prius drivers are always trying to lightfoot their way through the roadways, likely rarely bringing the engine up to a high RPM for a sustained period. I would hazard a guess that driver behavior plays (possibly heavily) into this issue, but I'm interested to hear what those of you with more experience with these cars have to say? My "new" 2011 has 180K on the clock, so I will be doing a full EGR/pipe/cooler cleaning asap, and installing an oil catch can. Hoping this is all preventative in time to avoid HG issues. I've also considered doing a preemptive HG replacement, given the mileage, not waiting for the head to warp and coolant to play swimming pool atop a cylinder, but that might be over-cautious. Anywho, Italian tune-ups good for EGR health? Or, lacking any measurable data, too hard to know?