[jmatta]

According to Jake Raby (Flat 6 Innovations), the highest risk is the plastic impellers breaking and lodging in the cooling passages in the cylinder head. Not so much mileage, but age can make the plastic brittle; I would venture you are on borrowed time. My 3.2 is going to be 9 years old this spring with only 19k miles on the clock...I plan to replace the pump just as a precaution.