INFINITI M, Y51 (USA)

Transfer case fluid capacity & service interval

INFINITI M, Y51 (USA) transfer case fluid capacity is 1 liter. Service intervals include checking every 15000 miles or 12 months and changing every 30000 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
M56 AWD (2013-2014)
  • Use: Normal
  • Capacity 1 liter
  • Check 15000 miles/ 12 months
M56 AWD (2013-2014)
  • Use: Severe
  • Capacity 1 liter
  • Check 15000 miles/ 12 months
  • Change 30000 miles/ 24 months
M56 AWD (2010-2012)
  • Use: Normal
  • Capacity 1 liter
  • Check 15000 miles/ 12 months
M56 AWD (2010-2012)
  • Use: Severe
  • Capacity 1 liter
  • Check 15000 miles/ 12 months
  • Change 30000 miles/ 24 months

Additional Notes

  • The INFINITI M Y51 (USA) transfer case fluid capacity is 1 liter across all listed M56 AWD configurations, a figure consistent with the compact transfer box units found in rear-biased AWD systems of this class.
  • A 1-liter capacity is characteristic of a service fill volume, meaning the figure reflects the amount of fluid needed during a routine drain-and-fill procedure rather than a full overhaul or disassembly refill.
  • Under normal use conditions for the M56 AWD (2010-2012), the transfer case fluid schedule includes only a check interval at 15,000 miles or 12 months, with no fluid change specified.
  • Under severe use conditions for the M56 AWD (2010-2012), the same 15,000-mile or 12-month check interval applies, and a fluid change is added at 30,000 miles or 24 months.
  • The M56 AWD (2013-2014) carries identical transfer case fluid specifications to the 2010-2012 variant, with the same 1-liter capacity, the same check interval under normal use, and the same severe-use change interval of 30,000 miles or 24 months.
  • The severe-use change interval of 30,000 miles or 24 months represents a time-or-distance threshold, meaning whichever limit is reached first would trigger the fluid change.
  • The absence of a fluid change interval under normal use conditions, present across both the 2010-2012 and 2013-2014 M56 AWD entries, means the normal-use schedule is limited entirely to periodic fluid level verification.

Other Systems