Well I am nearly days away from finally starting my new to me lathe, how ever I am having trouble finding some oil for the carriage in it. The owners manual calls for Shell Tonna 33, I have done some googling to find a cross for it and have found very little. One place I found said that 30 weight non detergent motor oil was what should be used in its place. Being a little leary of that, I went to my local bulk oil retailer and asked them what to use in place of the Tonna. They kinda gave me a blank stare, did some looking on there computers and a few phone calls later came up with nothing. So does anyone know what to use instead of it?!? Thanks all for all your help.