McCormick X7 VT-Drive

AdBlue (DEF) capacity & service interval

The McCormick X7 VT-Drive uses AdBlue (DEF) fluid with capacities of 38, 46, and 52 liters depending on the configuration. The data covers 10 configurations.

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

TypeSpecifications
X7.418 VT-Drive, Stage V (2022- )
  • Use: Normal
  • Capacity 46 liter
X7.618 VT-Drive, Stage V (2022- )
  • Use: Normal
  • Capacity 46 liter
X7.621 VT-Drive, Stage V (2020- )
  • Use: Normal
  • Capacity 52 liter
X7.623 VT-Drive, Stage V (2020- )
  • Use: Normal
  • Capacity 52 liter
X7.624 VT-Drive, Stage V (2020- )
  • Use: Normal
  • Capacity 52 liter
X7.660 VT-Drive, T4i / IIIB (2016-2020)
  • Use: Normal
  • Capacity 46 liter
X7.670 VT-Drive, T4i / IIIB (2016-2020)
  • Use: Normal
  • Capacity 46 liter
X7.440 VT-Drive, T4i / IIIB (2013-2020)
  • Use: Normal
  • Capacity 38 liter
X7.450 VT-Drive, T4i / IIIB (2013-2020)
  • Use: Normal
  • Capacity 38 liter
X7.460 VT-Drive, T4i / IIIB (2013-2020)
  • Use: Normal
  • Capacity 38 liter

Additional Notes

  • All McCormick X7 VT-Drive variants listed use a selective catalytic reduction (SCR) system, which injects AdBlue (diesel exhaust fluid) into the exhaust stream to convert nitrogen oxides into nitrogen and water vapor. The tank capacities across the range reflect the differing engine displacements and emission output levels each variant is designed to manage.
  • The X7.440, X7.450, and X7.460 VT-Drive models, all carrying the T4i / Tier IIIB emission certification and produced from 2013-2020, share an identical AdBlue tank capacity of 38 liters. A shared capacity across three distinct power outputs within the same emission tier and production window points to a common SCR system architecture across those variants.
  • The X7.660 and X7.670 VT-Drive, both T4i / Tier IIIB models produced from 2016-2020, carry a 46-liter AdBlue tank. The step up from the 38-liter capacity of the lower-output T4i variants reflects the greater exhaust volumes and NOx loads associated with higher-horsepower engines in the same emission family.
  • The X7.418 VT-Drive and X7.618 VT-Drive, both Stage V certified with a starting year of 2022, share a 46-liter AdBlue capacity. Stage V represents a stricter European emission standard than Tier IIIB, requiring more precise exhaust aftertreatment, and the 46-liter figure aligns with the tank size used on the larger-displacement T4i models in the range.
  • The X7.621, X7.623, and X7.624 VT-Drive models, all Stage V certified from 2020, carry the largest AdBlue tank in the X7 VT-Drive lineup at 52 liters. A larger reservoir reduces the frequency of AdBlue refills relative to fuel fill intervals, which is a practical consideration for high-output tractors operating over extended field hours.
  • A capacity of 52 liters is notably larger than the 46-liter figure shared by the X7.418 and X7.618 Stage V models, despite all five being Stage V certified. The difference indicates that the X7.621, X7.623, and X7.624 engines generate higher exhaust volumes requiring proportionally greater AdBlue consumption rates.
  • All capacity values listed are normal-use figures, meaning they represent the standard operating fill level under typical working conditions rather than a maximum overhaul or dry-fill specification. AdBlue tank capacities are generally stated as usable volume, and the figures across the X7 VT-Drive range fall within the typical bracket for agricultural tractors in the 150-250 horsepower class.

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