This video shows a technician saying that the gear box of the Roadster has oil in it and it needs to be changed every two years or so. http://www.youtube.com/watch?v=Ggoi0OBhVSQ&feature=youtu.be I was wondering if anyone heard of something like it for the Model S. Once every two years seems close to the same interval for changing engine oil when using synthetic. My 5 series only needed it once every 1.5 years. If this is true, it puts a big damper on the idea that the model S does not require oil changes. Transmission fluid is changed once every 10 years. My 5 series has 180k on it and i have never changed the Transmission fluid. (Transmission made by GM, BTW) I may have to change my name from "no-longer-greasing-slide to hell", to "Sometimes greasing slide to hell", if this is true. Perspective anyone? Thanks.