+1, Sixty Fiver, I use and like Tri-Flow but I have to keep things clean and do the wipe down religiously of the chain and cassette/chain wheels or the black gunk gets out of hand. The modern 10/11 speed chains have more arc engineered in to allow them to shift the wide range needed over the old 10-speed, as we called them, as well as the 6,7 and 8 cog chains, that the faster wear is a fact of life. Metallurgy it what saves them from disintegrating from the thinness of the plates now and the aluminum cassette's cogs wear faster, too. I can get several years or around 5,000 miles on modern chain with proper maintenance. My 1997 R500 had a change last year for the original chain because I changed out the drive for all 105 components.

It is still cheaper to replace a chain and a cassette/chain wheel for modern bicycles than motorcycles, open class motocrossers can eat a chain alive in short order and unless you want to speed things up the sprocket and counter-sprocket should be replaced too. I'll stick with my bicycle from now on.

Bill