How long has your OEM battery been in service?

Seems my OEM battery may be on its way out after 12 years and 4 months and 59,634 miles of service. Having read all the threads on batteries here (thanks to all for the help!), I noticed that most have to replace batteries every 3-5 years, even saw some OEM that died before 30k miles. Talking with Greg Pylant, we wondered if anyone had one that survived longer? Don't think I can salvage her as she is to unreliable, and my XF is my only means of transportation. Thinking of getting the Super Start Extreme model at O'Reilly's. Thoughts?