Volvo VNX series (USA / CAN)

Coolant capacity & service interval

Volvo VNX series (USA / CAN) coolant capacity is 50-59,5 liters. Service intervals are 750000 miles or 96 months. The data covers 2 configurations.

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

TypeSpecifications
VNX GHG22, D13 (2021- )
  • Use: Extended drain (max)
  • Capacity 50-59,5 liter
  • Change 750000 miles/ 96 months
  • Code: Volvo
VNX GHG17, 21, D13 (2018-2021)
  • Use: Extended drain (max)
  • Capacity 50-59,5 liter
  • Change 750000 miles/ 96 months
  • Code: Volvo

Additional Notes

  • The cooling system capacity across both D13 engine configurations spans 50 to 59.5 liters, a range that reflects variation in installed components such as cab heaters, auxiliary cooling circuits, and reservoir sizing rather than a single fixed fill volume.
  • The Volvo VNX series (USA / CAN) with the GHG17 and GHG21 D13 engine carries an extended drain coolant change interval of 750,000 miles or 96 months, whichever comes first, representing one of the longest published coolant service intervals in heavy-duty trucking applications.
  • The 96-month time limit on the extended drain interval equals eight years of calendar time, meaning a low-mileage or vocational unit would still require a coolant change at that point regardless of accumulated mileage.
  • The GHG22 D13 configuration introduced from 2021 onward shares the identical 50 to 59.5 liter capacity range and the same 750,000-mile / 96-month extended drain interval as the earlier GHG17 and GHG21 D13 variants, indicating continuity in cooling system design between those emission standard generations.
  • An extended drain designation in coolant service specifications typically requires the use of a fully formulated heavy-duty coolant or an approved extended-life antifreeze, as conventional coolants do not carry inhibitor packages rated for intervals of that length.

Other Systems