That is the general idea...and the RPM thing is to get some substantial oil pressure to help promote the leak.

I have search for the reasoning of the TSB [ Technical Service Bullitin] and could never get an answer...but my own thoughts are the possibility of too much oil pressure when topped off, thereby aiding and abetting to the head gasket leak, or just to much oil generally, causing engine cavitation ...just don't know why, just do know from experience and feedback from members here that read this when I posted the info a few years back that there was a difference.
Did it attribute to a failure ..???? Who knows..
B/c there has to be something to it, I just do it to their recommenation.
Same goes for tranny...an over-filled trans will act up as well.
As in Music, less is more.

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A Dalton