Nissan Titan, H61 (USA / CAN)

AdBlue (DEF) capacity & service interval

Nissan Titan, H61 (USA / CAN) models utilize AdBlue (DEF) with a capacity range of 17 to 24,9 liters. The data covers 4 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

All four configurations listed cover the Nissan Titan XD 5.0 V8 TurboDiesel, and all capacities apply to normal use conditions within a selective catalytic reduction (SCR) system. SCR systems inject diesel exhaust fluid (DEF/AdBlue) into the exhaust stream to reduce nitrogen oxide emissions.
The 2017-2018 Titan XD 5.0 V8 TurboDiesel carries an AdBlue tank capacity of 17 liters, a figure shared identically across both the Canadian and American market variants for those model years.
For the 2018-2019 Titan XD 5.0 V8 TurboDiesel, the AdBlue tank capacity increases to 24.9 liters, again with no difference between the Canadian and American market specifications.
The capacity increase from 17 liters to 24.9 liters between the earlier and later model year groupings represents a roughly 46 percent larger reservoir. A larger DEF tank generally extends the refill interval, reducing how frequently the fluid needs to be replenished between service visits.
The year 2018 appears in both capacity groupings, meaning the 2018 model year Titan XD 5.0 V8 TurboDiesel exists in two distinct specifications depending on production date or configuration, one with the 17-liter tank and one with the 24.9-liter tank.