INFINITI QX4, JR50 (USA)

Coolant capacity & service interval

INFINITI QX4, JR50 (USA) coolant capacity ranges from 9,2 to 10,6 liters. Service intervals include 30000 miles or 24 months and 60000 miles or 48 months. The data covers 8 configurations.

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

TypeSpecifications
QX4, JR50 (2002-2003)
  • Use: Normal
  • Capacity 9,2 liter
  • Change 30000 miles/ 24 months
QX4, JR50 (2002-2003)
  • Use: Initial service
  • Capacity 9,2 liter
  • Change 60000 miles/ 48 months
QX4, JR50 (2001-2001)
  • Use: Normal
  • Capacity 10,2 liter
  • Change 30000 miles/ 24 months
QX4, JR50 (2001-2001)
  • Use: Initial service
  • Capacity 10,2 liter
  • Change 60000 miles/ 48 months
QX4, JR50 (2000-2000)
  • Use: Normal
  • Capacity 10,2 liter
  • Change 30000 miles/ 24 months
QX4, JR50 (2000-2000)
  • Use: Initial service
  • Capacity 10,2 liter
  • Change 60000 miles/ 48 months
QX4, JR50 (1997-1999)
  • Use: Normal
  • Capacity 10,6 liter
  • Change 30000 miles/ 24 months
QX4, JR50 (1997-1999)
  • Use: Initial service
  • Capacity 10,6 liter
  • Change 60000 miles/ 48 months

Additional Notes

  • The INFINITI QX4 JR50 cooling system capacity for the 1997-1999 model years is 10.6 liters, which is the largest figure across all listed model year groups and reflects the total volume of coolant the system holds when fully drained and refilled.
  • Starting with the 2000 model year, the cooling system capacity drops to 10.2 liters, a reduction of 0.4 liters compared to the 1997-1999 specification, and the 10.2-liter figure carries through the 2001 model year as well.
  • The 2002-2003 model years show a further reduction to 9.2 liters, which is 1.0 liter less than the 2000-2001 figure and represents the smallest cooling system capacity in the listed range.
  • Across all model year groups, the normal use condition carries a change interval of 30,000 miles or 24 months, whichever comes first, meaning coolant is replaced on a relatively frequent cycle under standard operating conditions.
  • The initial service condition doubles the change interval to 60,000 miles or 48 months for every listed model year group. In coolant service terminology, an initial service interval refers to the first scheduled drain and fill after the factory fill, which often uses a longer-life coolant formulation from the manufacturer.
  • The capacity value is identical under both the normal and initial service conditions within each model year group, confirming that the 10.6, 10.2, and 9.2-liter figures represent the full cooling system volume regardless of which service interval applies.
  • The shift from 10.2 liters in 2001 to 9.2 liters in 2002 is the largest single-step capacity change in the listed specifications, amounting to a 1.0-liter decrease between consecutive model year groups.

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