Tried to change the transmission pilot bushing as preventive maintenance. But I broke my T27 bit attempting to get the heat shield off. I tried my T27 key wrench first but to no avail, so I moved up to my 1750 in/lb impact driver. It wouldn't budge and eventually the driver disintegrated the bit. Since it wasn't leaking anyway, I decided to leave it alone and hand wash it instead LOL.

It didn't have the MB recommended 'green dot' for post TSB, and it only had 5K miles when I bought it = I doubt it was ever upgraded. So, I expect it will leak sometime in the future.