Acura TLX (USA / CAN)

Additional Notes

• The Acura TLX 3.5 AWD transfer case holds 0.43 liter across all listed configurations, a small fill volume consistent with a compact torque-coupling unit rather than a traditional gear-driven transfer case requiring a larger fluid reservoir.
• Under severe use conditions, the Canadian-market TLX 3.5 AWD carries a transfer case fluid change interval of 48,000 km, while the USA-market equivalent specifies 30,000 miles, reflecting the same service philosophy expressed in different unit systems for each market.
• A separate first-change-only interval exists alongside the standard severe-use schedule. For the Canadian market, the first change under severe conditions is due at 64,000 km, and for the USA market at 40,000 miles, both longer than the recurring severe-use intervals that follow.
• The extended first-change interval under severe conditions acknowledges that initial fluid in a new transfer case may carry metal particles from break-in wear, after which the recurring shorter interval takes over for subsequent drain cycles.
• A third service path, labeled flexible and governed by the on-board maintenance system, is listed for both the Canadian and USA markets without a fixed kilometer or mileage figure, meaning the vehicle's monitoring system determines when a fluid change is due rather than a fixed distance.
• The 0.43 liter capacity figure remains identical whether the interval is the standard severe schedule, the first-change-only severe schedule, or the flexible on-board system schedule, confirming the fill volume is a fixed mechanical specification independent of service condition.