Just joined the Colchester club with a very nice 15 x 50. It's all cleaned up, changed lubricants, and ready to run, but I have no literature on the Hepworth tracer. The main hydraulic tank for the tracer specifies the same Shell Tellus oil as in the lathe headstock, however, there is also a small oil reservoir at the tracer head (see photo), but with no marking as to specific oil. Is this hydraulic oil like the Tellus or is it lubricating oil like the Tonna? Anyone have any instructions for the tracer? Thanks for any insights or help.