Why do you figure a need for an oil change?
One changes oil in a car because of the very high temperatures that break down the oil. Dirt from road use and combustion byproducts can contaminate the oil, and slow leaks and the combustion process can cause the oil level to drop below the needed amount.
None of these things are really true in a turntable situation. The primary issue there is the oil is so old that its viscosity has changed due to evaporation of the volatile components.
If you can disassemble the component, you might wipe it off with a clean cloth prior to re-oiling.
In that case, it is not really an issue of "changing" the oil as adding some more. A light machine oil is likely the proper one to use, but only the manufacturer can tell you for sure what is recommended.
One changes oil in a car because of the very high temperatures that break down the oil. Dirt from road use and combustion byproducts can contaminate the oil, and slow leaks and the combustion process can cause the oil level to drop below the needed amount.
None of these things are really true in a turntable situation. The primary issue there is the oil is so old that its viscosity has changed due to evaporation of the volatile components.
If you can disassemble the component, you might wipe it off with a clean cloth prior to re-oiling.
In that case, it is not really an issue of "changing" the oil as adding some more. A light machine oil is likely the proper one to use, but only the manufacturer can tell you for sure what is recommended.