Posted by Kettrinboy on 23/02/2016 08:38:00: Hi Alex , there is usually a plate somewhere on the back on machines to say what oils to use , but ii can tell you that in our shop at work where we had 4 Colchesters two Triumph 2000 and two Master 2500 lathes the boss always used Shell Tellus 68 oil in the headstocks and none of them ever gave trouble in the 15 yrs i was there , a lot of makes do similar spec oils like for example the Esso Nuto series , ARC Eurotrade sell Rock Oil 32 and 68 machine oils but only in 1 litre bottles i think , i am going to get some 68 myself to put in my Harrison L5 headstock , my boss usually got the 25 litre oil cans from Cromwell Tools as he had a trade account with them.