[mikefocke]

Jake doesn't make much replacing water pumps nor do many of them, his recommendation was offered for free to folks who wanted to do their own or have their local mechanic do it and wondered at the suggested interval and if there was a difference in the quality of the parts. Pretty disinterested recommendation IMHO and comes from someone who has been inside a lot of engines, both failing and not.

Now having said that, it is always a personal call how much to spend on preventative maintenance and when to swap out a wear part that is seemingly doing fine for a new one (with the added risk that any work has of introducing a new problem). You can go broke doing preventative maintenance or improvements and the next buyer probably won't give the cost back to you. Would you rather buy a car with a whole long list of fixes and upgrades or one still running what the factory put there. People fall into two camps.