MikeBiker said:
I doubt Simple Green will attack anything in a chain.
I'm not so sure about that. I had heard the "urban legends" over at MTBR about simple green eating parts and I never believed it until I soaked a couple of nearly new chains in straight simple green, and then accidentally forgot about them for a week (other things on my mind).
After I found them soaking I rinsed them off, lubed em up and put one back on the bike. First ride out I broke the chain 3 times. Each time it broke exactly the same way, with the sideplates cracking at the rivet.
I figured it was a bad chain, until I put on the second one that had been oversoaked, and it broke twice on the next ride, in exactly the same manner.
I tried the first chain again just to be sure, and it broke one more time. By this point, I wouldn't even dare getting out of the saddle and was spinning the easiest gear I could find.
I use SRAM chains, and I have been using them since 1991 (they were Sachs back then), and in 14 years I can only recall breaking a SRAM/SACHS chain 1 other time. I can't prove it was the simple green that did it, but I had never soaked a chain in it before and I haven't since. And the chains did look a bit "etched" after that amount of soaking.
Now I realize that nobody would soak a chain for a week on purpose, so this is an extreme case. I have used Simple green for cleaning parts, chains, and just about everything else on the bike with no problems, but thats a short scrub and rinse, no soaking.
I use oderless mineral spirits to clean my chains now. I put it in a plastic peanut butter jar, swirl it around, then put it in a second jar with cleaner mineral spirits. Wipe it down and it's as bright and shiny as you can get. I put the chain back on, lube it, let it dry overnight, and wipe it down.
Works alot better than simple green ever did.