Oops, he was a Coke man... and I did not necessarily agree with all that Sheldon had to say, and in this case, I don't on the commercial box and brush cleaners (his judicious use of the word "may" indicates he also wasn't totally convinced).

There was a very extensive thread on the Bicycle Mechanics forum quite some time ago that I was involved in that discussed chain wear, and I have this strange feeling that Sheldon might have altered the page that has been referenced to include some of the points from that discussion. We won't ever really know, I suppose.