McCormick X6.6 Series

Additional Notes

• Both the X6.616 Xtrashift and X6.618 Xtrashift carry an AdBlue tank capacity of 38 liters, which is a notably large reservoir relative to many agricultural machines and reflects the demands of continuous field operation where frequent refilling would be disruptive.
• The McCormick X6.6 Series AdBlue specifications apply to Stage V / Tier 4f emissions-certified variants, meaning the 38-liter capacity figure is tied specifically to engines meeting those regulatory standards through a selective catalyst reduction system.
• A selective catalyst reduction system uses AdBlue, a urea-water solution, to convert nitrogen oxides in exhaust gases into nitrogen and water, and the 38-liter tank capacity listed here supports that chemical process across both the X6.616 and X6.618 configurations.
• The capacity values listed are service fill figures, representing the usable tank volume rather than a dry-fill or overhaul quantity, which is consistent with how AdBlue reservoirs are specified across agricultural and commercial vehicle applications.
• The use condition recorded for both variants is normal, meaning the 38-liter capacity figure applies under standard operating conditions rather than a severe-duty or first-fill scenario.
• The X6.616 and X6.618 share an identical 38-liter AdBlue capacity despite differing in engine output designation, indicating no variation in tank sizing between the two power levels within the 2023 X6.6 Series lineup.