Nissan Titan, H61 (USA / CAN)

Additional Notes

• The Nissan Titan XD 5.0 V8 TurboDiesel uses a selective catalytic reduction (SCR) system, which requires AdBlue (DEF) as a consumable fluid injected into the exhaust stream to reduce nitrogen oxide emissions.
• For the 2017-2018 model years, both the USA and CAN variants of the Titan XD 5.0 V8 TurboDiesel share an identical AdBlue tank capacity of 17 liters under normal use conditions.
• A capacity of 17 liters is a moderately sized DEF reservoir, meaning refill intervals are tied closely to fuel consumption patterns, as DEF usage rates are proportional to engine load and fuel burned.
• For the 2018-2019 model years, the AdBlue tank capacity increases to 24.9 liters on both the USA and CAN variants of the Titan XD 5.0 V8 TurboDiesel, representing a substantial increase over the earlier 17-liter specification.
• The jump from 17 liters to 24.9 liters between the earlier and later 2018 configurations reflects a nearly 46% increase in DEF reservoir size, which in practical terms extends the distance a vehicle can travel before requiring a DEF refill.
• The 2018 model year appears in both capacity specifications, indicating a mid-cycle change to the DEF tank size occurred within that year across both the USA and CAN markets simultaneously.
• All four configurations carry a normal use condition designation, meaning the listed capacities apply to standard operating environments rather than severe-duty or fleet-specific service classifications.