2008 Altima 2.5 break in period

Hi there,

 I wanted to get some opinons on the break in period and methods for a
2008
Altima 2.5.  In the past, I have always kept it under 100m/hr for the
first
1500km and tried to vary the speed so that the rings don't wear unevenly. 
I
don't want to mess up the compression nor the drivability so I wanted to
hear from those folks with experience.

Thoughts??

Thanks,
Andrew.