3k changes might seem foolish to some, but I don't think it is for the car I have. I have a 2005 Dodge 2.7 V6. A lot of people have had trouble (I understand so anyway) with theirs by doing 6k changes. Mine has always had 3k to 4k changes, and I have 117k miles on mine. Doesn't smoke, doesn't burn oil, and it runs very quiet. In my case, I think the 3k change has allowed me to get a lot more mileage out of my engine than some people have gotten. Now, on my 05 Silverado with the 4.3 v6, I once went 8,500 on it, but I had Mobil 1 in it. I do not run a synthetic in my dodge now, but I am thinking of going to Castrol Syntec, or Mobil 1, and running it say 4,500 to 5,000. Haven't decided definitely yet. But to say that everyone is wasting oil, or being foolish because they do the 3k change is not so, nor is it justified in my view.