I have a 2000 Ford Mustang V6 with 109,000 miles on it. I was thinking it was about time to replace the water pump, thermostat and coolant since all these things are original when the car was built. I just wanted some input if it is a good idea to change these parts out, or if I am just wasting money and time. The water pump doesn't leak water and the car does not overheat. The car has also given me no problems to think I should replace these parts, it is just preventative maintenance. Thanks guys!