Larry Dighera wrote:

So, are you saying that the FADEC will command a reduction in engine
power to reduce heating as the high-temp limit is approached?

I'm not absolutely sure on this, but I don't think so. I think it just
has an extremely efficient cooling system (overkill, so to speak) which
is regulated by FADEC, i.e. reduced to keep the engine temperature high
enough.

Of course I believe that if one really tries, one *will* find a way to
kill the engine. E.g. the POH forbids a sustained power setting of more
than 75%. Or, as others have pointed out, remove the coolant before
flight. Or if nothing else helps, take a sledge hammer.