Gents, I regularly check my rear diff fluid level. I'm curious about any other type of maintenance that I should be doing on the rear axle. I have replace both wheel bearing on my front wheels but haven't really heard much about the rear axle bearings etc... Can someone please comment if there are any components which should be check/lubricated etc? Any info would be welcome.

Long Live the E320!

 

I would just drain and fill the rear axle. I wouldn't do much more than that on the axle unless I had problems.