Compressor oil - Nomad II

MicroLubrol 100% Silicone oil

on Amazon 

https://www.amazon.com/MicroLubrol-Silicone-Polydimethylsiloxane-centistokes-viscosity/dp/B0106E1FQM

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The instructions on the original Nomad are disappointingly vague, and I flat out haven't been able to find an instruction manual on the Nomad II. (although it is possible that is because I'm an idiot and they're somewhere obvious, none were in the package I could find nor on PA's website) I am currently using some pure 30wt silicone oil branded as "shock oil" for the RC industry. *shrug*