would like to know what brand oil the Jaguar dealers use on my 2003 S Type R
and what OEM oil filter to get thanks

 

All the dealers I've wandered into sell Castrol products, probably because of the marketing agreement between to two companies. I wouldn't go out of my way or spend extra to find it. Any brand of oil of the correct spec and viscosity will work just fine (IMHO)

If you insist upon using the OEM filter, I suppose you'll need to go to the dealer. Don't know who makes the filters for Jag.

 

Jag's filters are quite cheap here, not worth saving by hunting around. Any 5W30 oil here.