Autopilot servo gears - lubed or dry?

[455 Bravo Uniform]

I’ve only seen the guts of a servo twice. One was clean, looked like no lubricant, the other had what looked like grease. Both STEC units. Which one was wrong?

 

[455 Bravo Uniform]

 

[FORANE]

Frankly I'm impressed that this question has gone unanswered by the peanut gallery.

 

[Kiddo's Driver]

I can't answer this one way or the other, but without knowing manufacturer & model number it is almost impossible to answer.

My gut? If it spins it needs oil, if it slides it needs grease.