As a novice pilot, I am concerned this post starts buy suggesting engine management advice should be taken from an anonymous contributor called Jabawocky, some dentist, and a lawyer. The industry is in serious trouble.
You omitted to mention the other shyster in the APS team: John Deakin.
Mr Deakin only has about 37,000 hours in command, around half of it on 747s and the rest on Gulfstream IV, C-46, M-404, DC-3, F8F Bearcat, Constellation, B-29 and V35. What would
he know?
What's wrong with 25/25?
Depends on the engine. But on many piston aero engines, reducing the revs to 2500 moves the peak pressure point closer to TDC (thus increasing the peak pressure) and reducing the throttle from e.g. Sea level MP to 25 effectively leans the mixture and increases the EGT and CHT.
The shysters at APS will have you believe that the 2 biggest enemies of cylinders are internal pressure and temperature, and that you can avoid unnecessarily high internal pressures and temperature by leaving the throttle wide open and not reducing RPM by mutch in the climb. And such is the extent of the APS deception that all of the available aircraft engine monitors on the market have been programmed - much like Volkswagen emissions test fooling software - to show this.
Don't fall for it!