Jaguar XJ, X350 / X358 (USA)
Coolant capacity & service interval
Jaguar XJ, X350 / X358 (USA) models require coolant with a capacity range of 9,45 to 13,15 liters. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| XJ8 4.2 (2004-2008) |
|
| XJR 4.2 SC (2004-2008) |
|
Additional Notes
- The XJ8 4.2 cooling system capacity falls within a range of 9.45 to 10.25 liters, reflecting the variance typical of service fills where residual fluid and air pockets in the system account for the spread between the lower and upper figures.
- The XJR 4.2 SC cooling system holds between 12.35 and 13.15 liters, a notably larger volume than the naturally aspirated XJ8 4.2, which is consistent with the additional thermal load generated by the supercharger requiring greater coolant capacity to manage heat effectively.
- Across the 2004-2008 model years, the difference between the XJ8 4.2 and XJR 4.2 SC cooling system capacities amounts to roughly 2.9 liters at both the low and high ends of each respective range, indicating a meaningfully distinct cooling circuit between the two engine configurations.
- Both the XJ8 4.2 and XJR 4.2 SC cooling system specifications are listed under normal use conditions, meaning the stated capacity figures apply to standard operating environments rather than severe-duty cycles.