Hi all.
I'm completing a 427ci cobra replica build for a customer (previous 2 garages went bust - Dax was one of them). In fact DAX would most likely have put it in. My issue is I don't know what diff oil and additive to put in it. I have given Jag the numbers off the diff but they can't find anything at all, but he said the lube differs so its important that we get it right being an LSD with the additive required.

Does anyone recognise the axle in the photos?
The number looks like
15HU - 010 - 319

All the paperwork for the car went missing when DAX went into liquidation, but the customer thinks it was from an XF.

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Anyone who can help?
Thank you to anyone who can shed some light on which diff oil/additive to use.