What differential fluid for 95 E300D with ASD?
 

The FSM specifies that, for vehicles with limited slip differentials (which I understand ASD is a version of), "special hypoid gear oil SAE 90" should be used. Would Mobil 1 75w90 nonetheless be a good choice? Or should I use something else? This is for the 95 E300D.

I wouldn't use Mobil 1 75 w90. I would use MB spec 235.7, 85 w90.
Was part number 001 989 17 03 but now 001 989 33 03.

Pelican Parts - Product Information: 001-989-33-03-12-M22


But part number 001 989 33 03 also references 75 w85. I would choose 85 w90 though.

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It seems that the MB fluid is NLA. Should a standard fluid with LS additive be used?

I'd venture that a standard fluid with LS additive would be fine.

What do the W124 / W126 "standard" limited slip differentials call for?

-J

Owners manual for the w140 says something pretty dumbed down and benign. As I recall it merely asks for a 90W gear oil suitable for limited ship differentials.