Acura TLX (USA / CAN)

Additional Notes

• The Acura TLX 2.4 cooling system carries a service fill capacity of 6.1–6.3 liters, expressed as a range to account for minor variation during refilling procedures. The reservoir holds a separate 0.86 liters, which sits outside the main circuit and serves as an overflow and expansion buffer.
• The TLX 3.5 service fill capacity of 8.4 liters is notably higher than the 2.4 figure, reflecting the larger displacement V6 engine's greater cooling circuit volume. A larger engine block and additional cooling passages account for the increased system demand.
• The 3.5 reservoir capacity of 0.72 liters is slightly smaller than the 0.86-liter reservoir on the 2.4 variant, despite the V6 having a larger overall cooling system. Reservoir sizing is determined by expansion characteristics and overflow management rather than total system volume.
• The TLX 3.5 AWD shares identical coolant capacities with the standard TLX 3.5 — 0.72 liters for the reservoir and 8.4 liters for the service fill — indicating the addition of all-wheel drive hardware does not alter the engine cooling circuit specifications.
• All six configurations across both the USA and CAN markets carry the same capacity figures within each engine variant, confirming no regional differences in cooling system volume between the two markets for the 2014–2020 model years.
• All configurations use a flexible service interval governed by the on-board maintenance system rather than a fixed mileage or time-based schedule. The on-board maintenance system monitors driving conditions and calculates service needs accordingly, which means coolant service timing varies by individual vehicle use patterns.