I have a 2016.5 SL LE White Pearl and within only having 60 miles or so I noticed my rear pinion seal is leaking. It was leaking about the size of a quarter every time after I drove it. The dealer couldn't get me in for a couple of weeks so I went ahead and changed the fluid to Mobil 1 Synthetic 75w-140 and topped it off. I know a lot of owners were complaining of noise in the angle drive which I don't notice in mine. Some people were advising after the change they noticed a quieter angle drive, some not until several hundred miles, and some not at all. However I decided I was going to do it anyways due to the pinion seal leak. Below you will find a guide on how to do it.
- quart bottle pump(amazon is where i got mine)
- 1 quart of 75w-140. I used Mobile 1 Synthetic
- oil pan
- M8 Hex Socket/Key
- Flat head
- Star pattern socket/screwdriver
That should be it.. clean everything and re-torque fill and drain plugs between 10-14 ftlbs.