Giving the bike a quick clean and discovered this. On the right side only. It was a little worse on the wheel side of the fork.

 

I don't really see a problem. Wash it thoroughly and keep a close eye on it. If anything you have a weeping seal that could be cleaned with a sealmate.

 

To give context to the photo, as it may not be clear as to where on the forks the zoom is, it is on the lower part of the slider where the casting that holds the axle, etc.
I cleaned of the residue and it has not returned, yet.
Thanks, I will keep an eye on it.

 

Don't let it get like this!