Originally Posted by Leonardo629
It's weird how my copy says 5,500rpm instead of 4,500
You may be looking at an earlier issue mine is 03/2012
you can download the latest one here ---> Click then select your e9x
Those files get revised ... having worked in engineering all my life we constantly revised things
not a day went by without it
However, in this case there are 2 different numbers (owners manual 4,500 and in the supplementary manual it states 5,500) to be on the safe side I used the 4,500 number during my break in period.
You can look up the supplementary manual here ----> CLICK to open