Others probably know better than I. However, at 17.2k I had my second right hand fork seal leak. The first one was at only 9.8k! With any luck you don't have a fork seal leak which should be addressed before it gets your brake pads all wet at which time you'll need to replace them also.
Clean your forks well with whatever method works for you, wipe, soap and water, whatever. Then start feeling up the fork after a ride, or after some time period, feeling for the oil, and feeling for where it is coming. With my second leak which I caught MUCH SOONER than the first it would only take a day for me to feel it at the fork seal, whereas it wasn't really visible to the eye, but sure enough you could feel it!