Leaking Oil From Top Of Fork Leg

Unlikely to have fork oil leak from there as there’s a significant air gap above the oil level and below the fork top.

Just a thought but it’s not brake/clutch fluid leaking and running down the pipe to the lowest point then dripping off onto the fork top is it ?

 

Then it’s time to strip the fork(s) down and see what’s going on inside There are o-ring seals in there so perhaps one has given up, perhaps the fork was overfilled, there’s only one way to find out.

Or, if the front suspension is working as intended just live with it and wipe the oil away before/after each ride.

 

Yeah as already said there will be a small o ring in there that’s failed.

 

If they are like any of the cartridge forks I have worked on, fork oil travels up the damping rod to the control valve level below the adjuster screw no matter how big the air gap is, so with a failed seal, you are likely to have a minor oil leak as pictured.
You should not need to strip the forks, or even remove them from the bike, should be able to unscrew the fork top, let the yoke drop to the level of spring tension on the other fork leg, lock the damping rod, remove the fork top, strip it, clean or replace the seal, and put it all back together. Done.

 

Not quite so straightforward Jon. There is spacer between the spring and the fork top that needs to be pushed down against the spring and held there so that the lock nut can be accessed. Once the lock nut is lessened the fork top can be spun off. A tool is required to push the spacer down and something like a slotted washer placed below the lock nut to hold the spacer down. I wouldn't like to try it with the fork leg still on the bike.

 

Thanks Derek, it was meant as a “sequences may have been shortened” type bish bash bosh rather than a blow by blow account. I have my own tools for the forks I regularly work on, but at a push it is easy enough to improvise from stuff in most toolboxes.
But it is pretty easy to do without dropping the forks out - done it this way without issue on a track day - just loosen the pinch bolt on the top yoke so the fork top doesn’t bind, and the normal sag on the remaining spring takes the leg you are working on down to a useful level.

 

Yes Jon, I appreciate it can be done but assumes a certain level of knowledge that the OP may not have.