The closest from the top of my head would be a hydraulic oil like Castrol AWH32 or something similar with a viscosity of 32 cSt. But I know it isn't exactly what you asked for.
Another alternative is synthetic lubricant for refrigeration compressors.
Hanseline produces a fine sewing machine oil, it is made in Germany, and you can get it in 0.2 or 1L bottles (I don't know how much your machine needs).
I have used it for my sewing machines and been very satisfied with the performance. Nadel24.de sells it for 2.98 Euro for a bottle of 0.2 L, I normally buy a bottle or two whenever I stock up on needles for the sewing machines.
Grüsse aus Dänemark
Jonas