Mine leaked much worse than that for years until I finally bit the bullet and did a knuckle rebuild.
There is an inner axle seal that keeps the gear oil in the differential separate from the grease in the Birfield and hub.
Mine was leaking on the driver's side and all mixed together into a nasty brown greasy soup.
No real harm done. All new bearings and seals were a part of the knuckle rebuild anyway.
The rebuild is a huge dirty job that you can't expect to complete in a day or even two.
Getting it all apart and clean may have been the worst part of the task.
For a minor leak I wouldn't rush into it.
There is an inner axle seal that keeps the gear oil in the differential separate from the grease in the Birfield and hub.
Mine was leaking on the driver's side and all mixed together into a nasty brown greasy soup.
No real harm done. All new bearings and seals were a part of the knuckle rebuild anyway.
The rebuild is a huge dirty job that you can't expect to complete in a day or even two.
Getting it all apart and clean may have been the worst part of the task.
For a minor leak I wouldn't rush into it.