[HAM] Oiling a JR-20

[Dave Bishop]

I've used baby oil, because it smells best when I inevitably spill it.  The 
smallest tube has the greatest effect on the amount of reverberation; I 
usually fill them with a turkey baster and then suck some back out to bring 
the level down to 1 inch from the top.  There are reports of users combining 
different weights of oil, such as mineral oil, transmission fluid and 
Hammond oil, which set up layers within the tubes that change the timbre of 
the reflections.  The point is, there's plenty of room for experimentation. 
I don't have any insight about whether hammond provided the oil originally. 
As far as I know, the oil never goes bad and has negligible evaporation.

Regards,

Dave Bishop