Kia K900, KH (USA / CAN)

Coolant capacity & service interval

Kia K900, KH (USA / CAN) coolant capacity ranges from 8,6 to 10,8 liters. Service intervals include 30000 miles/ 24 months and 120000 miles/ 120 months. The data covers 12 configurations.

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

TypeSpecifications
K900 3.8 V6 (CAN) (2017-2018)
  • Use: Normal
  • Capacity 8,6 liter
  • Change 30000 miles/ 24 months
K900 3.8 V6 (CAN) (2017-2018)
  • Use: First change only
  • Capacity 8,6 liter
  • Change 120000 miles/ 120 months
K900 3.8 V6 (CAN) (2015-2017)
  • Use: Normal
  • Capacity 8,6 liter
  • Change 30000 miles/ 24 months
K900 3.8 V6 (CAN) (2015-2017)
  • Use: First change only
  • Capacity 8,6 liter
  • Change 120000 miles/ 120 months
K900 3.8 V6 (USA) (2015-2018)
  • Use: Normal
  • Capacity 8,6 liter
  • Change 30000 miles/ 24 months
K900 3.8 V6 (USA) (2015-2018)
  • Use: First change only
  • Capacity 8,6 liter
  • Change 120000 miles/ 120 months
K900 5.0 V8 (2015-2018)
  • Use: Normal
  • Capacity 10,8 liter
  • Change 30000 miles/ 24 months
K900 5.0 V8 (2015-2018)
  • Use: First change only
  • Capacity 10,8 liter
  • Change 120000 miles/ 120 months
K900 3.8 V6 (2014-2015)
  • Use: Normal
  • Capacity 8,6 liter
  • Change 30000 miles/ 24 months
K900 3.8 V6 (2014-2015)
  • Use: First change only
  • Capacity 8,6 liter
  • Change 120000 miles/ 120 months
K900 5.0 V8 (2014-2015)
  • Use: Normal
  • Capacity 10,8 liter
  • Change 30000 miles/ 24 months
K900 5.0 V8 (2014-2015)
  • Use: First change only
  • Capacity 10,8 liter
  • Change 120000 miles/ 120 months

Additional Notes

  • The Kia K900 3.8 V6 cooling system holds 8.6 liters across all listed configurations, covering the 2014-2018 period for both USA and CAN market variants. A capacity in this range is typical for a full cooling system service fill, meaning the figure accounts for the radiator, engine block passages, heater core, and associated hoses rather than a partial drain-and-fill.
  • The 5.0 V8 engine carries a noticeably larger cooling system capacity of 10.8 liters, compared to 8.6 liters for the 3.8 V6. The additional 2.2 liters reflects the greater internal volume of a larger displacement eight-cylinder engine block and its associated cooling passages.
  • Under normal use conditions, all K900 cooling system configurations share the same change interval of 30,000 miles or 24 months, whichever comes first. Normal use in coolant service contexts generally refers to standard driving patterns without sustained extreme heat, heavy towing, or other conditions that accelerate coolant degradation.
  • A separate "first change only" interval of 120,000 miles or 120 months applies to all listed K900 configurations regardless of engine. In coolant service schedules, a first-change-only interval typically reflects the extended service life of a long-life coolant formulation used at the factory fill, after which the standard recurring interval takes over.
  • The 120,000-mile or 120-month first-change interval represents a 4:1 ratio compared to the 30,000-mile or 24-month normal interval. The time component of 120 months equals 10 years, indicating the factory coolant fill is rated for a decade of service before the first scheduled replacement.
  • The 3.8 V6 specifications are split across three distinct configuration entries: a general 2014-2015 entry, a CAN-market entry covering 2015-2017, and a USA-market entry covering 2015-2018. Despite the market and year distinctions, the capacity and interval values remain identical across all three at 8.6 liters with the same normal and first-change intervals.
  • The 5.0 V8 appears in two entries: a general 2014-2015 configuration and a 2015-2018 configuration. Both share the 10.8-liter capacity and the same dual-interval structure, with no variation in service specifications between the two entries.

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