Looks like a good move to replace the polymer impeller waterpump anytime after being informed. Everyone should realize that the v6 aluminum engine block and heads cannot take a waterpump failure and overtemp condition. Ford should have realized that in design stage. I will be changing mine ASAP (98 LX 163,000 km). I was one of the few people back in the 70's who owned the original Mazda rotary (R100) in which any temperature rise from normal destoyed the engine. Completely aluminum and with a hot and cold side to the engine (intake on left, exhaust on right)and ~60 large O-rings sealing the coolant passages between the engine plates even a small lack of coolant was death.
Aluminum warps easily, and corrodes quickly. Change the waterpump when you know it will break in future and change coolant absolutely every 2 years or sooner. Polymer in a rotating high heat part. What were they thinking. BTW plastic impeller is not more efficient if metal impeller is designed properly with high strength metal alloy.
