My odometer was reading 24.3k miles exactly. I purchased the car in August of 2011 with 18.9k miles.
Did my annual oil change after driving 2k miles in 2012. lol
I also decided to drain and refill transmission fluid. I just drained it through the bottom plug and I drained exactly 3.6 quarts. Surprisingly, the transmission fluid color was quite dark. After draining and refilling, my head is telling me that the car is shifting more smoothly.
I also took another step and changed the differential fluid. For a car with such low mileage, the fluid was VERY slimy. I guess age is also a factor to consider when changing fluid.