I crawled under my 1988 300sel to change the fuel filter and was going to drain the axle as well but could not find the plug.
The fill plug and vent is easy to find but I expected to see a plug at the botton of the differential.
Do I have to remove one of the bottom bolts holding the assembly? What does the plug look like? could it be covered with crud?
Would appreciate some help, thanks
Armind