People who service mounts say they should be treated like cars, and get a regular service, but they have a vested interest.
What do you all do with regards servicing your mounts? How much do you do, or get someone else to do, and how often? We have an EQ8 R Pro which has been in an observatory for about 5 years and seems to be working fine.
The grease dries out. I’ve had my Astro-Physics 900GTO for about 20 years and I did remove the gear covers and add the manufacturer’s recommended grease once about 5 years ago. I’ve never serviced my 15-year old Astro-Physics 1200GTO but it sounds grindy now, so it needs it. They are both in sheds. I doubt that it would matter much if you used a different grease. I am sure this frequency will depend on the make of mount and how well sealed it is. They are certainly not like bikes which do need servicing every 2 years, at least, if you ride regularly.