INFINITI Q70, Y51 (USA)

Transfer case fluid capacity & service interval

INFINITI Q70, Y51 (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 8 configurations.

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

TypeSpecifications
Q70 3.7 AWD (2018-2019)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Code: ETX13C
Q70 3.7 AWD (2018-2019)
  • Use: Severe
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 20000 miles/ 24 months
  • Code: ETX13C
Q70 5.6 AWD (2018-2019)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Code: ETX13C
Q70 5.6 AWD (2018-2019)
  • Use: Severe
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 20000 miles/ 24 months
  • Code: ETX13C
Q70 3.7 AWD (2014-2018)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Code: ETX13C
Q70 3.7 AWD (2014-2018)
  • Use: Severe
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 20000 miles/ 24 months
  • Code: ETX13C
Q70 5.6 AWD (2014-2018)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Code: ETX13C
Q70 5.6 AWD (2014-2018)
  • Use: Severe
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 20000 miles/ 24 months
  • Code: ETX13C

Additional Notes

  • The INFINITI Q70 Y51 transfer case holds 1 liter of fluid across all AWD configurations covered in the specifications, which is a compact fill volume consistent with the sealed, single-speed transfer units commonly found in rear-biased AWD passenger cars of this class.
  • The 1-liter capacity figure applies equally to both the 3.7 and 5.6 engine variants, indicating no difference in transfer case size between the two powertrains despite their significant displacement gap.
  • Under normal use conditions, the specifications call for a fluid check at 10,000 miles or 12 months for all AWD configurations, with no fluid change interval listed for normal use.
  • Under severe use conditions, the same 10,000-mile or 12-month check interval applies, but a fluid change is additionally required at 20,000 miles or 24 months, doubling the check interval before a replacement is due.
  • The 20,000-mile or 24-month change interval under severe use applies uniformly across both the 3.7 and 5.6 AWD variants for the 2014-2018 and 2018-2019 model year groupings.
  • The specifications present two overlapping model year groupings, 2014-2018 and 2018-2019, which means the 2018 model year carries entries under both ranges, reflecting a mid-cycle specification revision rather than a simple sequential split.
  • Despite the two distinct year groupings, the transfer case fluid capacity and service intervals are identical between them for both engine variants, meaning the 2018 revision did not alter the fluid volume or maintenance schedule for the transfer case.

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