Stumpy, I'm planning to change the fluid/oil in the near future since it is fairly new and the rear end has around 3k mile since the last fluid change from the break-in period. So, it had one fluid change at around 500 miles or so and then I wanted to do this one since it has about about 2.5k to 3k miles from that change to inspect and make sure things are good to go since I bought the truck this way with the limited slip already installed.