I think this thread has all the evidence we need as to the value of the "proper" break in procedure :rofl2:

I've heard both sides of the story, break in the way you drive/thank the kid at the dealer who did a burn out in your car... Then I speak to the engineers at work... They say 90+% of the break in is done in the first few strokes of the engine being on and within a few miles of the car being driven. BUT they all baby their cars as well, some say in case a bigger piece of metal flies off at 6k RPMs the oil may not have the chance to prevent it from getting sucked into something.

They all said a few oil changes should be done very quickly.

Personally, I'd say break it in properly. You just spent $30-50k on the car, why not spend some time breaking it in? And I'd do an oil change after like 100 miles, then keep driving slow to about 1000 and do another oil change.

When I bought my Z, it had like 6 miles on it... so it was broken in before I got to it. I think my mustang had 12... thats more than broken in.

The only reason I do not go immediate full throttle on a fresh fully built engine is for the sake of debris and contaminants in the oil. The filter will catch them, but that is only after they have made their way back to the pan and through the pump again. For a factory "new" car with a couple miles on it, whatever happened before I got it is out of my control so its ready to drive hard as far as I am concerned. For a fresh build that I did myself, I get the engine up to operating temp off idle and bleed the cooling system, then I change the oil. Just because a shop/home/DIY/etc engine build is going to introduce more contamination during assembly than a factory build.

Drive it like you stole it. If and when it breaks it's still under warranty. :eekdance: