*sigh* here we go again...this is the same endlessly parroted response - the same people say never use anything except OEM oil and air filters because they're the "best" (proven false) and always wait 600 miles to change the oil the first time because you need to let the crap circulate and help parts bed in (or whatever, proven false)
"But the manual says so!"
Who cares? Common sense and countless case studies trump the manual and it's outmoded break-in methodology.
In reality, the break-in guidance in the manual is an extremely conservative procedure intended to cover a vast range of possible owner uses. It's always better for the manufacturer to err on the side of caution. Regardless, it's been proven over and over (and over) that a moderately hard break in with short bursts of throttle (initially in the lower gears, to prevent excessive heat, higher gears later) works - plain and simple, end of story. With short trips, frequent oil changes, occasional hard throttle, break in is complete well before 1000 miles, and many compression/leak down/dyno tests prove it, unequivocally
This is the most balanced article I've seen on the topic - this is the method I use and my engines never use a drop of oil. Gentle break in motors very often use *some* oil
New Engine Break-in Procedure