Hose and Hose Clamp Basics

NukeBass said
Springs eventually relax over time, so is there a recommended replacement time on the spring loaded clamps? I would think the screw clamps would be better for this reason since you can tighten them periodically, but I have been wrong before. :)

They've been on our 04 Ford Escape since it was build in 2003 and nothing has leaked yet. In fact, I haven't had to add the first DROP of coolant.