Acura TSX, CU2 (USA / CAN)
Coolant capacity & service interval
Acura TSX, CU2 (USA / CAN) coolant capacity ranges from 6,2 to 6,7 liters for service fills. Service intervals include normal use. The data covers 4 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| TSX 2.4 (2011-2014) |
|
| TSX 3.5 (USA) (2011-2014) |
|
| TSX 2.4 (2009-2010) |
|
| TSX 3.5 (USA) (2009-2010) |
|
Additional Notes
- The Acura TSX CU2 2.4-liter engine carries a cooling system service fill capacity of 6.2–6.3 liters, a range that reflects normal variation in residual fluid retained within the system during a drain and refill procedure rather than a full overhaul.
- The 2.4-liter service fill capacity of 6.2–6.3 liters remains unchanged across the 2009-2010 and 2011-2014 model year groups, indicating no revision to cooling system volume between those two production periods.
- The TSX 3.5-liter engine, available in the USA configuration, carries a service fill capacity of 6.7 liters, which is approximately 0.4–0.5 liters greater than the 2.4-liter variant's specified range.
- As with the 2.4-liter, the 3.5-liter service fill capacity of 6.7 liters is consistent across both the 2009-2010 and 2011-2014 model year groups, with no change recorded between those periods.
- All four rows specify service fill values rather than overhaul capacities. A service fill figure represents the volume needed when refilling a system that has been drained but not fully disassembled, meaning the actual total system volume is typically higher.
- All capacity values across both engine variants are designated for normal use conditions, meaning the specified fill volumes apply to standard operating environments without adjustment for severe-duty or first-change scenarios.