18,000+ miles on a 525 O-Ring Chain and climbing. This is on a Suzuki VStrom, Dual Purpose bike. It has had a lot of 80mph time on the interstate and a good bit of time, splashing through creeks, riding in the rain, and lugging over rough jeep trails....not to mention, loading it over 1.000 lbs and hauling the wife and luggage on weekend trips.
I have absolutely no doubt that this chain will last 20k+ miles, but due to some big rides this summer, I will probably replace shortly for peace of mind. (I don't want a broken chain on a trip 500 miles from home, on a Sunday.)
I am totally sold on Dupont Multi-Use. I spray the chain down liberally every 500 miles...and keep rolling. By the way, my sprockets look brand new as well.