INFINITI QX4, JR50 (USA)

Automatic transmission fluid capacity & service interval

INFINITI QX4, JR50 (USA) automatic transmission fluid capacity ranges between min and max. Service intervals occur every 15000 miles or 12 months. The data covers 4 configurations.

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

TypeSpecifications
QX4, JR50 (2002-2003)
  • Use: Normal
  • Between min and max.
  • Check 15000 miles/ 12 months
  • Code: 5/1
QX4, JR50 (2001-2001)
  • Use: Normal
  • Between min and max.
  • Check 15000 miles/ 12 months
  • Code: 5/1
QX4, JR50 (2000-2000)
  • Use: Normal
  • Between min and max.
  • Check 15000 miles/ 12 months
  • Code: 5/1
QX4, JR50 (1997-1999)
  • Use: Normal
  • Between min and max.
  • Check 15000 miles/ 12 months
  • Code: 5/1

Additional Notes

  • Across all model years covered, the automatic transmission fluid level specification calls for a reading between the minimum and maximum marks, which reflects a service-level check rather than a full drain-and-fill capacity figure.
  • The INFINITI QX4, JR50 carries a consistent fluid check interval of every 15,000 miles or 12 months, whichever comes first, applied uniformly under normal use conditions across the 1997-2003 span.
  • The 15,000-mile or 12-month check interval is tied specifically to normal use conditions, meaning the interval applies to standard driving circumstances as opposed to more demanding operating environments.
  • The specification format of "between min and max" is characteristic of a dipstick or sight-glass level verification procedure, indicating that the service action is a fluid level inspection rather than a measured volume replacement.
  • The 1997-1999, 2000, 2001, and 2002-2003 model year groupings each carry identical automatic transmission fluid check specifications, showing no variation in either the level requirement or the service interval across the full 1997-2003 production range.

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