Prolink Turns Black??

Steve Sr. wrote:
Hello,

I recently switched to Prolink and have noticed that whatever this
stuff is it goes on clear but comes off black! Does anybody know what
this black residue is? I find it hard to believe that it is road gunk.

Could this black residue be part of the chain or maybe a reaction by
product of Prolink and the metal in the chain? It appears that Prolink
got started on coal mining equipment where everything is already
black and wouldn't notice a little more.

Does anyboy know what is really in this stuff? It smells like mineral
spirits i.e. paint thinner. Is there more to it than that?


Our lord and savior Jobst once said this is road gunk mixed with small
particles of metal from pins wearing on the chain.

-nate