To find the exact engine oil capacity for your 2004 Jaguar XJ8, I recommend checking:
* Your owner's manual: This is the most reliable source for information specific to your vehicle.
* The oil filler cap: The capacity may be printed on the filler cap itself.
* A trusted online resource: Websites like Jaguar's official website or repair manuals (such as Haynes or Chilton) may have the information you need.
* Your local mechanic: They will have access to the most up-to-date information.
Please note: The oil capacity can vary depending on the specific engine your car has. Make sure to confirm the exact engine type before referencing any information.