Starting to reassemble the E30. Competed the rear suspension changes with no dramas. Before I drain and fill the diff, is there a preferred fluid (synthetic vs. petroleum) and should an LSD additives be used?
Differential lube
King_Tut
#2
I used Redline Synthetic in whatever the OEM spec weight is. I haven’t heard of anyone adding an LSD additive.
Delphin25
#3
Yeh I use Redline for LSD’s (I think the 75W90) I doesnt need modifier.
http://www.redlineoil.com/Products.aspx?pcid=4
I also use the redline MTL for the tranny.
Just switched from Mobil 1 15W50 to Motul for the M20B25?
From a full synthetic to blend.
used Kendal dino oil for break-in