Cheers Rutts but I am struggling with this, I went to my local Factors and asked for LSD oil, he kind of looked at me blankly as he wasnt sure which one to offer 70/90 or something........do you have a name or spec ?
I previously asked on FB about this, I was going to use Castrol Syntrax, but got guidance that it was too aggressive for old diffs, seals etc, due to the modern additives and someone said use additive 90004033, then someone added in that EP90 with the additive is what to use, so I went with that, then someone said EP90 is not suitable, so I am back to square one.
I currently have EP90, 50ml of 90004033 a diff gasket and a fear that if I do this it will not be right.
Is this the sort of thing I need :-
Castrol Axle Z Limited Slip 90 (was Hypoy LS90)