Some claim Water Wetter reduces coolant temps, most say it does nothing to coolant temps. The anecdotal evidence is inconclusive, and there is no science to support lower temperatures with a simple additive.

I am always concerned about adding aftermarket products to any OE recommended fluid as one never knows if there are incompatibilities.

The first thing that one needs to understand are the basic design algorithms of the fans and the normal temperatures this yields under various driving and ambient temperature conditions.

Another consideration is that early 2.3s had and electro-magnetic engine driven fan clutch, not a thermo-viscous clutch. The former engages at about 100C and locks the fan to the hub, so it will always turn at pulley speed and not slip at higher revs like the thermo viscous clutch when it is "engaged".

The 2.3s with electromagnetic fan clutch also had a single auxillary electric fan that engages at 105C or under the command of the A/C pressure switch. I'm not sure if the later 2.3s continued with the electromagnetic clutch or transitioned to a thermo-viscous drive. The latter is easily recognizable by it finned hub. The former engages with an audible "click" when it is energized.

Duke