Engine break-in, Which is the best way? Options

[HectortheRican]

I'm trying to break in my motor as quickly as I can before Saturday or else I won't be able to take my car back to Albuquerque with me for a while.

The shop that rebuilt my motor and my mechanic all told me to do a slow break-in. You've all heard this one: Take it slow for 500 miles, change the oil/filter, take it slow for another 500, change the oil again and you're good to go. No highway, no higher than 55mph, and constant speeds are bad, mmmkay.

But I've been reading online and found a contradictory method that seems to have a lot of evidence against the manufacturer and mechanic recommended slow break in. It's called it's called the MotoMan method (here's the link: http://www.mototuneusa.com/break_in_secrets.htm). This one says that you should start off quick and hard in order to get the rings to seat properly and drive it normally for a little while and you're good to go. The biggest evidence against slow break-in that MotoMan has is that with the slow break-in, the cylinder walls are likely to glaze and the rings will never seat properly, thus causing oil burning and other problems down the road.

What are all of your opinions on this?

I've already started breaking in my motor and I'm 200 miles in. I didn't do it slowly, but I've been driving normally, except no hard acceleration and no constant speeds. I haven't gone on the highway and haven't gone faster than 45-50 mph.

[zfjohnson07]

ive heard the fist 20,000 miles on the engine is crucial, if you run it hard, it will run like that. thats what my dad said when he bought is 04 mach 1 at least. older mechanics, have rebuilt engines in there cars and ran it to hell and back and had no problems, then again engines were a little different back then. newer mechanics, go by the book, dont't take any short cuts.