Could a semi synthetic 15w40 motor oil do? Or EP90 perhaps?
Turntables run at very low speed, but fairly high point loading, so gear oils may be a good choice if advised by the bearing manufacturer. However - most EP ('exteme-pressure') Gear oils contain a lot of sulphur, because it is a very good additive for high point/shear-loading oils (=the really smelly ones!) These additives also progressively attack brass /copper compounds as used in some gearbox synromesh clutches and turntable bearings.... Synopsis: stay with GL4 oils at most, and do not use GL5-rated gear oils in anything using a brass bearing.
The late great Tom Fletcher of Nottingham Analogue always swore by a motor oil called Molyslip - use has been verified by other users too as being a very good oil for turntables. I used to use it in my Thorens 124 many moons ago
Thanks guys, Ive checked the owners manual for the TT and Logic state under no circumstances am I to use anything other than their own oil. Logic went out of business many moons ago. On a brighter note I took the platter and sub platter out and the oil looks like new so I guess it's probably best left alone.
try mobil 1 0w-5w fully synthetic oil . horribly expensive to buy but if you have a pal with a bmw or mercedes AMG you may be able to cadge a few cc for your turntable good luck !
I just bought a VPI Classic and contacted them regarding oil and recommended a fully synthetic or non synthetic 40 weight oil (w40), which I had enough left from a top up on my VW Passat, job done.