Temperature management these days as I know it seek to heat rapidly and then be able to properly cool the engine.
For example, you use your faster heating water to heat up oil and then revert to cooling it.
An engine is more efficient when it is quite hot but the cooling has some sort of lag so it is always a compromise.
Also more efficient cooling means more water / bigger radiator and so on so you get more "cooling lag" and more weight too ...
Honestly I can't really figure out what can be done to such good numbers.
Maybe some kammback of the rear end ?
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