Shell still make a Turbo T oil but I don't think it is the same stuff as it is for turbines & industrial use! I guess a good quality general purpose lubricant oil would be suitable.
You also need a lithium based water resistant high melting point extreme high pressure grease to replace the Ragosine Listate grease which is NLA. Ragosine Oil Company became ROCOL who now make Saphire grease but don't think there is a direct replacement for the Listate grease as it contained lead which is not allowed now.
Tony
<font size="1">1981 TR7 FHC Cavalry Blue
1980 TR7V8 DHC Jaguar Regency Red - sadly sold!
1977 TR8 FHC EFI Factory development car Inca Yellow</font id="size1">