You guys need to read about Chain-L at: http://www.chain-l.com I've been using this stuff now for 3 months and so far it's been great and has done everything they promised it would do. Of course long term chain wear is still in limbo till I get some miles on it. But I started using Chain-L when I put a new chain on one of my bikes and thought, "why not try Chain-L on the new chain". So on one of the bikes I'm using Chain-L and will be watching to see how long it will last. Normally on this particular bike I get about 10 to 12,000 miles on a chain, and at my rate of riding plus riding other bikes it may take 5 years or so to get an accurate idea. So in order to that the best way I bought a Park CC2 chain checker, which I felt would give me a far more accurate reading then using the ruler method I used for 35 some odd years. So maybe I can get an idea earlier then that, not sure. But if the Chain-L continues to perform like it is, I may switch all my bikes over before the test is over on the one chain.