Its not just about saving pennies - its about longer engine life, and less exposure to max temps/high egts etc, MTOW.
Longer life = pennies
will hopefully mean less chance of the engine exploding/catastrophic failure on some dark and stormy night at
I respectfully disagree, it also pennies here. It means that more parts have to be changed more often to avoid the possibility of exploding/catastrophic failure. The end sum is the number of hours that the engine operates at max trust and take off power