After 8 years and 36,000 miles....it's time to change the serpentine belt. It is starting to show a few cracks on the inside. Perfectly normal, and no imminent failure but I think eight years is pretty good and I don't want to wait for it to break. I need to order a tensioner from Merlin....the Gatorback I can get anywhere. This has to be one of the last OEM belts still in use