Got 8 litres of the right MB fluid, and going to attempt auto box fluid and filter change tomorrow; anything I should be cautious of? Any hint or tips appreciated!
Job done!! Was surprised how smoothly it went. All the pan holder bolts just fell out. It was pretty unmolested under there and the bolts weren't corroded. ATF definitely needed changing. Car done 125k miles, should be ok for another 100
Drained torque converter by undoing the banjo on the box and draining the cooler, worked a treat.