Originally Posted by muskrat
I've just been on a trip in my Roadster and apart from getting a surprisingly good over 30mpg, I also noticed that the gear change gets better the further you go - presumably as the oil in the box heats up. Just wondered if anyone has changed it for anything better as most of my journeys are about 10 miles not 200, and if they have is it hard to do?
I have changed out the fluid, but only with more OEM fluid because of the miles. If you are over 50K, I would recommend it, as it made my shifts a little crisper.
There have been several members with low mileage cars that have changed it as well for something like royal purple or amsoil equivalent. They report similar results of better shifting.
The drain plug is a little difficult to get to, and is a strange size, but it is a pretty straightforward process.
Good luck.