skinnee: it's just that imho coolant relative effectiveness to water might be different at low or high flow scenarios or with higher or lower temps, so it might be worth to test at least corner cases to claim once for all, 'coolant X is better then Y at such setups by Z%, yet at such setup difference is minimal and not worth the extra price', just like TIMs that might have different effectiveness with different heatloads/temps, no?