I too am having a hard time understanding the request in your post. As it is now, if you recieve engine oil and/or radiator damage only, but your engine is still good (green), you can keep on flying until you run out of oil (engine oil hit) or until your engine gets so hot it seizes up (radiator hit). At which point and time the engine itself is dead/broken/red and should be shown as such in the damage list. I have successfuly shut down engines with oil or radiator damage and saved what limited time they have left on them for when/if I need it. On single engine aircraft I can also usualy cut back on my throttle/rpm/prop-pitch and milk a decent amount of time from my engine before it dies. Going full burn though and staying in a fight, ignoring the oil and radiator damage, my engine won't last very long at all.
Maybe you don't know this, but when the oil runs out or when the engine gets too hot from a bad radiator, it just locks up (it doesn't scream or spew out sparks and flames until it or you decides it doesn't want to anymore, it just stops turning and is dead). You can't force a locked up engine to do anything but nothing.
