Interesting. The dealer replaced my clutch in Feb. '10 due to the "no reverse" issue, but the work order says nothing about replacing the OEM gear oil. At $30 a quart, I doubt they would have neglected to document replacing the gear oil and not getting reimbursed by smart USA. So it looks like I still have the OEM fluid, which is good and bad. Good that they stuck with the Getrag approved fluid, "bad" that it's still in there after 20,000 miles.
Guess I'll be changing it myself at 30K.