There's also stuff like Redline's Water Wetter and others' products, like RV Cool that are good to add to the water/coolant mix, they apparently help conduct heat better than typical coolant does without them, gives a smidgeon more effectiveness to your cooling system.

MSDS, SHO-shop Y, custom 2.5" catback; xcal2; 63mm TB, K&N 3530; Koni struts, Aussie bar; THaines forks, Quaife, SpecII, UR fly; DMD; Nima UD pullies; Stazi brakes; f&r Pole120 mounts. Just a daily commuter car. Silver '98 SVT E0 #3159