Jaguar XJ, X308 (USA)

Differential fluid capacity & service interval

Jaguar XJ, X308 (USA) uses differential fluid with a capacity of 1.9 liters. The data covers 2 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • XJR (2001-2003)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • XJ8 4.0 (1999-2003)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter

Additional Notes

  • The Jaguar XJ X308 rear differential holds 1.9 liters of fluid across both the XJ8 4.0 and XJR configurations, a capacity figure that reflects a service fill level rather than a full overhaul or dry-fill quantity.
  • A 1.9-liter differential capacity is relatively modest by rear-wheel-drive standards, which is consistent with the compact hypoid gear sets typically found in performance-oriented luxury sedans of the era.
  • Both configurations carry a normal use condition designation, meaning the 1.9-liter capacity specification applies under standard operating circumstances rather than severe-duty or high-stress driving cycles.
  • The XJ8 4.0 specification covers the 1999-2003 model years, while the XJR specification begins with the 2001 model year, reflecting a narrower production window for the supercharged variant within the same X308 generation.
  • Despite the difference in engine character between the naturally aspirated XJ8 4.0 and the supercharged XJR, the rear differential fluid capacity remains identical at 1.9 liters across both variants.

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