INFINITI QX70, S51 (USA)

Transfer case fluid capacity & service interval

INFINITI QX70, S51 (USA) transfer case fluid capacity is 1 liter. Service intervals include checking every 10000 miles or 12 months and changing every 20000 miles or 24 months. The data covers 4 configurations.

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

TypeSpecifications
QX70 3.7 AWD, S51 (2013-2017)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
QX70 3.7 AWD, S51 (2013-2017)
  • Use: Severe
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 20000 miles/ 24 months
QX70 5.0 AWD, S51 (2013-2014)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
QX70 5.0 AWD, S51 (2013-2014)
  • Use: Severe
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 20000 miles/ 24 months

Additional Notes

  • The INFINITI QX70 S51 transfer case holds 1 liter of fluid across all listed AWD configurations, a figure consistent with a service fill rather than a full overhaul capacity.
  • Both the 3.7 AWD and 5.0 AWD variants share an identical 1-liter transfer case capacity, meaning engine displacement has no bearing on transfer case fluid volume in the S51 platform.
  • Under normal use conditions, the 3.7 AWD specifies a transfer case fluid check at every 10,000 miles or 12 months, with no scheduled drain-and-fill interval listed for that use condition.
  • Under severe use conditions, the 3.7 AWD retains the same 10,000-mile or 12-month check interval but adds a fluid change requirement at 20,000 miles or 24 months.
  • The 5.0 AWD follows the same interval structure as the 3.7 AWD, with a 10,000-mile or 12-month check under normal conditions and a 20,000-mile or 24-month change added under severe conditions.
  • The 5.0 AWD engine was available in the S51 only through 2013-2014, while the 3.7 AWD spans the full 2013-2017 model year range covered in the specifications.
  • The 20,000-mile or 24-month change interval under severe conditions represents a time-and-distance threshold where whichever limit is reached first would typically trigger the service.

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