INFINITI QX4, JR50 (USA)

Power steering fluid capacity & service interval

INFINITI QX4, JR50 (USA) uses power steering fluid with a capacity range between min and max. Service intervals include checks at 30000 miles/ 24 months and 7500 miles/ 6 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
  • Between min and max.
  • Check 30000 miles/ 24 months
QX4, JR50 (2002-2003)
  • Use: Severe
  • Between min and max.
  • Check 7500 miles/ 6 months
QX4, JR50 (2001-2001)
  • Use: Normal
  • Between min and max.
  • Check 30000 miles/ 24 months
QX4, JR50 (2001-2001)
  • Use: Severe
  • Between min and max.
  • Check 7500 miles/ 6 months
QX4, JR50 (2000-2000)
  • Use: Normal
  • Between min and max.
  • Check 30000 miles/ 24 months
QX4, JR50 (2000-2000)
  • Use: Severe
  • Between min and max.
  • Check 7500 miles/ 6 months
QX4, JR50 (1997-1999)
  • Use: Normal
  • Between min and max.
  • Check 30000 miles/ 24 months
QX4, JR50 (1997-1999)
  • Use: Severe
  • Between min and max.
  • Check 7500 miles/ 6 months

Additional Notes

  • Across all model years covered in the specifications, the INFINITI QX4 JR50 power steering fluid level is expressed as a range rather than a fixed volume, with the reservoir kept between the minimum and maximum marks rather than filled to a precise measured quantity.
  • Under normal use conditions, the power steering fluid check interval is set at 30,000 miles or 24 months, whichever comes first, and I find this interval consistent across the full 1997-2003 model year span.
  • Under severe use conditions, the check interval shortens considerably to 7,500 miles or 6 months, reflecting the increased stress placed on the power steering system in more demanding operating environments.
  • The gap between the normal and severe check intervals represents a fourfold difference in mileage, with 30,000 miles under normal conditions compared to 7,500 miles under severe conditions, across every model year in the specifications.
  • The 1997-1999 model years share identical power steering fluid check intervals for both normal and severe use conditions, with no variation in the specified mileage or time thresholds between those three years.
  • The 2000 model year carries the same check intervals as the surrounding years, maintaining 30,000 miles or 24 months for normal use and 7,500 miles or 6 months for severe use.
  • The 2002-2003 model years are grouped together in the specifications and carry the same normal and severe check intervals as all prior years in the 1997-2003 range, indicating no change in service frequency requirements for the final production years covered.

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