Cadillac XLR (USA / CAN)

Coolant capacity & service interval

Cadillac XLR (USA / CAN) coolant capacity ranges from 2 to 12 liters. The service interval is 240000 km or 60 months. The data covers 5 configurations.

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

TypeSpecifications
XLR 4.6 V8 (2009-2009)
  • Use: Normal
  • Capacity 12 liter
  • Change 240000 km/ 60 months
XLR-V 4.4 V8 Supercharged (2009-2009)
  • Use: Normal
  • Capacity 12 liter
  • Capacity 2-2,25 liter (intercooler)
  • Change 240000 km/ 60 months
XLR 4.6 V8 (2007-2008)
  • Use: Normal
  • Capacity 12 liter
  • Change 240000 km/ 60 months
XLR-V 4.4 V8 Supercharged (2007-2008)
  • Use: Normal
  • Capacity 12 liter
  • Capacity 2-2,25 liter (intercooler)
  • Change 240000 km/ 60 months
XLR 4.6 V8 (2004-2006)
  • Use: Normal
  • Capacity 12 liter
  • Change 240000 km/ 60 months

Additional Notes

  • The Cadillac XLR (USA / CAN) cooling system holds 12 liters across all configurations from 2004 through 2009, covering both the standard 4.6 V8 and the supercharged XLR-V 4.4 V8 variants.
  • A 12-liter cooling system capacity is a moderately large figure for a two-seat roadster, reflecting the thermal demands of a V8 engine in a performance-oriented platform.
  • The XLR-V 4.4 V8 Supercharged adds a separate intercooler circuit with a capacity of 2 to 2.25 liters, meaning the total cooling fluid volume across both circuits ranges from 14 to 14.25 liters on supercharged models.
  • The intercooler circuit on the XLR-V is a distinct cooling loop used to reduce the temperature of compressed air produced by the supercharger, and its separate capacity figure indicates a dedicated fluid fill independent of the main cooling system.
  • The standard 4.6 V8 in the XLR carries a single cooling system capacity of 12 liters with no intercooler circuit, distinguishing the fluid service scope from the supercharged XLR-V configuration.
  • All configurations across 2004-2009 share an identical service interval of 240,000 km or 60 months under normal use conditions, placing coolant changes on a five-year or distance-based cycle, whichever comes first.
  • A 240,000 km interval is associated with long-life coolant formulations, which are engineered to maintain corrosion inhibitor effectiveness and freeze protection over extended periods without requiring earlier replacement under normal use.
  • The 60-month time limit on the coolant change interval means that even low-mileage vehicles reaching five years of service would fall due for a coolant change regardless of distance accumulated.

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