Thanks for the info. I changed my rear diff fluid at 30,000 km yesterday. All went smoothly as per the DIY, was pretty easy with the car on a hoist. One thing I noticed was that I only drained a little over one quart of fluid. I put the full 2 quarts back in and it just overflowed a little out the fill plug. There was no evidence of any leaks, just thought it strange that only 1 quart came out. Perhaps it came like that from factory I'm not sure ?