Standard Dexron 3.
Nothing special required in that transmission.
I use "Synthetic Multi Vehicle ATF", and all is fine.
'01 S Type 3ltr SE Silver (hers), '01 S Type 3l SE, Black (mine), many others now departed, about 12 I think??
Jaguars only since 1968, have I missed something??.
The V12's are missed the most, Bugga.