As part of a remodeling project, I installed a brand new stainless
steel sink a few weeks ago. The model number is Kohler K-3145,
Cadence, Self-Rimming Kitchen Sink.
http://www.us.kohler.com/onlinecatal...rod_num=3145-4

With my old sink, we used to keep a bottle of liquid hand soap on the
rim of the sink. We did that for about 30 years with no problems. With
the new sink I happened to notice a stain on the sink in the shape of
the bottom of the bottle about a week or two after I installed the
sink. Hard scrubbing with dish soap won't remove it and neither will
some other stuff I bought called "Stainless Steel Magic". Looking on
the plus side, though, it is hardly noticeable. So, I suppose I can
live with it.

So, what's the deal with this stainless steel sink staining so easily?
I wonder what else I have to worry about with this new sink?