Wrist Pin Etching
 

I have these wrist pins for a stock 2.0 six cylinder motor. Most of them have a slight etching to them. I'm not sure of the history of the motor so I don't know what might have caused it. I suspect water. Does anyone know what might have caused this? Should I continue to look for replacement wrist pins? Or use these? They can be slightly felt with a fingernail.
http://forums.pelicanparts.com/uploa...1128216881.jpg

Rub on them with a little scotchbrite. See if the markings are still there. Given these are relatively inexpensive, replacing it wouldnt be that bad either. Piece of mind is worth a lot:)

My rule of thumb (or thumbnail) is that if you can feel it with your nail, it's significant, and not a stain.

-Wayne