Dunno if there’s opportunities in ARB for such, but I’ve found running my engine at ~85% throttle (or rather: whatever throttle gives me 1.15 ATA on my instruments) in all my 109s (F, G, K) when not in immediate danger has given me some pretty significant margins before the engine kills itself from over-heating in actual emergencies. I’ll grant that this is viable and possible in ASB where you get to pick your engagements and have time to let your engine relax but might be useless for ARB. It even lets me WEP for combat with the F-4 (alongside ~65% or 75% rads which I toggle on when I start turning).
I mostly started doing it after seeing the engine management cheat sheets for Il2:GB for continuous vs combat power (30 minute max) out of curiousity if I can avoid my engine temps turning yellow after 20 minutes of flying (it indeed stops my engine temps turning yellow after ~20 minutes of flying).
Basically, 100% throttle for take off and climb to 3 km altitude, throttle down to 85% (or even 60%) when flying to objective or patrolling above objective once at my target altitude. 100% if I see unknown plane or confirmed hostile. WEP if emergency (say: a dogfight).
For non 109s, the equivalent is running 85 or 92% prop pitch (or specific RPM if I know them like 2700 for P-51C) and slamming to 100% in a pinch.


