To be, or not to be. Was thinking here sometime back, isn't the bushing an oil lite bushing? Some say grease it, some say don't grease it, it will get into the clutch. Seems like it's always gone when ever I go in there again.
Depending on vehicle, pilots can be many materials.
It can be difficult to see in many instances, and it's kind of a rule to never put unlubed friction surfaces together, a small amount of light lubricant is wise unless known oilite .
That was yelled at me early in my career, read it, and practiced it for decades.
jmo