Hyundai HD78/170/250

Coolant capacity & service interval

Hyundai HD78/170/250 coolant specifications cover a capacity of 45 liters. The data includes three configurations. The fluid type specified is coolant for normal use.

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

TypeSpecifications
HD170 4x2, D6AB-d (2004- )
  • Use: Normal
  • Capacity 45 liter
HD170 4x2, D6AV (2004- )
  • Use: Normal
  • Capacity 45 liter
HD250 6x4, D6AC (2004- )
  • Use: Normal
  • Capacity 45 liter

Additional Notes

  • The Hyundai HD170 and HD250 cooling systems each hold 45 liters of coolant, a capacity consistent with heavy commercial truck engines that require large thermal management volumes to handle sustained high-load operation.
  • The HD170 4x2 with the D6AB-d engine, introduced in 2004, carries a 45-liter cooling system capacity under normal use conditions.
  • The HD170 4x2 fitted with the D6AV engine shares the same 45-liter cooling system capacity as the D6AB-d variant, despite being a different engine configuration.
  • The HD250 6x4 with the D6AC engine, also starting from 2004, matches the 45-liter cooling system capacity seen across the HD170 lineup, even though the HD250 operates on a heavier 6x4 drivetrain platform.
  • All three configurations specify the 45-liter figure as a cooling system capacity under normal use, meaning the value applies to standard operating and service conditions rather than a specialized overhaul or first-fill scenario.

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