Kubota RTV

Coolant capacity & service interval

Kubota RTV coolant capacity ranges from 1,8 to 7,9 liters. Service intervals include 24 months and 2000 hours/ 24 months. The data covers 6 configurations.

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

TypeSpecifications
RTV-X1100C (2013- )
  • Use: Normal
  • Capacity 7,9 liter
  • Change 24 months
RTV-X1140 (2013- )
  • Use: Normal
  • Capacity 7,6 liter
  • Change 24 months
RTV-X1200D (2013- )
  • Use: Normal
  • Capacity 6,1 liter
  • Change 24 months
RTV-X900 (2013- )
  • Use: Normal
  • Capacity 6,1 liter
  • Change 24 months
RTV500 (2008- )
  • Use: Normal
  • Capacity 1,8 liter
  • Change 2000 hours/ 24 months
RTV900 (2006-2012)
  • Use: Normal
  • Capacity 4 liter
  • Change 24 months

Additional Notes

  • The Kubota RTV-X1100C carries the largest cooling system capacity in the lineup at 7.9 liters, reflecting the greater thermal demands of a larger displacement engine requiring more coolant volume to maintain operating temperatures.
  • The RTV-X1140 holds 7.6 liters of coolant, placing it close to the X1100C but still 0.3 liters below, a difference that corresponds to variations in engine block and cooling jacket design between the two models.
  • Both the RTV-X1200D and RTV-X900 share an identical cooling system capacity of 6.1 liters, despite being distinct models with different engine configurations, indicating a common cooling system architecture across those two variants.
  • The RTV500, starting from 2008, has a notably smaller cooling system capacity of just 1.8 liters, consistent with a compact utility vehicle built around a smaller engine with reduced heat rejection requirements.
  • The RTV900 from 2006-2012 holds 4.0 liters of coolant, sitting between the compact RTV500 and the larger X-series models, which reflects the mid-range engine displacement of that generation.
  • All X-series models (RTV-X1100C, RTV-X1140, RTV-X1200D, and RTV-X900) share a uniform 24-month coolant change interval under normal use conditions, regardless of their differing capacities.
  • The RTV500 carries a dual-condition change interval of 2,000 hours or 24 months under normal use, whichever comes first. The addition of an hour-based threshold alongside the calendar interval accounts for high-frequency operational use where time alone may not reflect actual fluid degradation.
  • The RTV900 (2006-2012) specifies a 24-month change interval under normal use, matching the calendar-based schedule applied to the later X-series models, though without the hour-based threshold seen on the RTV500.

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