I recently picked up and old Singer (1947 year). With the attachments was a tube of lubricant for the motor.I don't think the tube had been opened. So I decided to give it a try. Of course I checked it out for consistency and smell before anything else. It seemed ok so into the motor it went. The machine motor, even after several hours of use ran perfect, no lingering odors or grinding smells or noises. Of course I am hanging onto this tube of greasy lubricant. It also came with a small can of oil. It too seemed to be in good shape and so I used it too. Take the technician's advise and use the lubricant he suggested. You should be fine I would think.