About 125,000 miles. I was drivng it on a cool night on the freeway, temp guage started to fluctuate, limped it to a gas station. It was steaming out of a seam. Filled it up with coolant and a little stop leak(I know, that stuff is nasty) and got it home. I think it will be another stock rad, but will check to make sure the cooling fan is kicking on too. Was not beating on it or anything, though I do that from time to time