Valtra (Valmet) N4 Direct

Coolant capacity & service interval

Valtra (Valmet) N4 Direct uses coolant with a capacity of 18 liters. Service intervals include checks every 10 hours and changes every 2400 hours or 24 months. The data covers 4 configurations.

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

TypeSpecifications
N134 Direct (2015-2021)
  • Use: Normal
  • Capacity 18 liter
  • Check 10 hours
  • Change 2400 hours/ 24 months
N154 Direct (2015-2021)
  • Use: Normal
  • Capacity 18 liter
  • Check 10 hours
  • Change 2400 hours/ 24 months
N154e Direct (2015-2021)
  • Use: Normal
  • Capacity 18 liter
  • Check 10 hours
  • Change 2400 hours/ 24 months
N174 Direct (2015-2021)
  • Use: Normal
  • Capacity 18 liter
  • Check 10 hours
  • Change 2400 hours/ 24 months

Additional Notes

  • The Valtra (Valmet) N4 Direct cooling system capacity is 18 liters across all four variants — the N134, N154, N154e, and N174 Direct — indicating a uniform cooling system volume regardless of engine output differences between the variants.
  • The 18-liter figure represents a service fill capacity, meaning the volume of coolant required to fill the system during a standard drain and refill, rather than a full overhaul or component-replacement scenario.
  • A coolant level check interval of 10 hours applies to all four variants under normal use conditions, reflecting the relatively short inspection cycle typical of agricultural machinery operating in demanding field environments.
  • The coolant change interval is specified at 2400 hours or 24 months, whichever comes first, for all variants from 2015-2021. The dual-trigger format means calendar time can mandate a change even when the hourly threshold has not been reached.
  • The N154e Direct shares the same 18-liter capacity and identical check and change intervals as the N134, N154, and N174 Direct, despite the "e" designation typically indicating an emissions-related engine variant with additional thermal management components.
  • All specifications across the N134, N154, N154e, and N174 Direct apply under normal use conditions, meaning the stated intervals are not adjusted for severe-duty or extended-service scenarios within the available data.

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