There is plenty of evidence to suggest that the better run an engine the better it has a chance of serving longer.
The biggest gains from an APS course are two fold. The first being operating either ROP or LOP at the appropriate settings that will give maximum life expectancy. this alone has massive financial implications in fuel burn and longevity.
The second and most important is the use of an engine monitor. these devices have the potential to unlock many opportunities to make a difference between the uninformed Vs. the informed.
Have a read of this article. Page 16
http://www.abs.org.au/uploads/March%202013%20Web.pdf
ROI is the key.
8-10 November in Camden.