Hi All, Just for information I have the second edition [1970 ] of "The text book of turning "
by Peter Hercus in which there is the list of recommended lubricants. Some/all may be out of date but may give a few leads for reference.
Supplier Recommended oil.
Mobil oil Aust Mobil Vactra Oil Heavy
Caltex Oil Aust. Pty Ltd Regal Oil P.C. [R&O]
Shell Co of Aust. Vitrea Oil 33
Ampol Petroleum Ltd Gernol Oil 37
Castrol Ltd Perfecto R.R.
H.C.Sleigh Ltd Purol Heavy Medium.
B.P. Aust Ltd. B.P. Energol H.P.30
Neptune Oil Co. P.13

All the best, Bill.