I have the same issue with my 2015 Street Glide. I was told by the dealer that it might be residue from the assembly lube. What they did was add a dye to see if it is really leaking. I was told by them to ride it for at least 1000 more miles and not clean it then bring it back. I'm currently trying to reach 1000 miles so I can bring it back.

 

Please keep us informed on how this works out. I'm under 1,000 miles as of now and have not had many riding days here in the Northeast. Our road guys love to use a ton of road salt or brine at the first hint of a snowflake. Now a new storm is on the way.

 

Curious if you might have an update? Did they test for the dye?

 

I would not worry about it. Most all new Harleys do that when they are new. If you ever get it hot and it is broken in, it will seal itself up. Take it out the first nice weekend and put about 500 miles on it.