Pontiac GTO (USA / CAN)
Coolant capacity & service interval
Pontiac GTO (USA / CAN) coolant capacity is 12 liter. Service intervals consist of 150000 miles. 1 configuration is covered.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| GTO 6.0 V8 (2003-2006) |
|
Additional Notes
- The Pontiac GTO (USA / CAN) 6.0 V8 cooling system holds 12 liters of coolant, a figure consistent with a full system service fill for a large-displacement V8 engine of that era.
- A 150,000-mile coolant change interval applies to the 6.0 V8 under normal use conditions, reflecting the extended service life associated with modern long-life coolant formulations rather than a traditional short-cycle replacement schedule.
- The 12-liter capacity and 150,000-mile interval are shared across the entire 2003-2006 model year span of the 6.0 V8, indicating no variation in cooling system specifications within that range.