One year between servicing is a guesstament. Some may need it more often, example every 9 months. Others may only need to be serviced every 18 -24 months. It really depends on how much you sew and what materials you use. Yes, there are oil pads on some newer machines and they do dry out over time. Think of your machine as you would a car, they all need servicing to keep them running efficiently. They won't completely stop, but will not run as well and this also wears parts. If you keep you machine happy, it will make you a happier sewer. Those vintage machines were meant to be serviced at home while the machines of today are difficult to access all the parts that need to be checked by the owner. I service machines as a part time service to quilt shop customers as we have no one within 2 hours. When I recommend having a machine serviced i am not trying to sell a new machine. Even we sewers like a spa day now and then:-)