INFINITI FX, S51 (EU)

Automatic transmission fluid capacity & service interval

INFINITI FX, S51 (EU) automatic transmission fluid capacity ranges from 9,2 to 11,3 liters. Service intervals include checks every 15000 km/ 12 months or 20000 km/ 12 months. The data covers 6 configurations.

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

TypeSpecifications
FX37, S51 (2011-2013)
  • Use: Normal
  • Capacity 9,2 liter
  • Check 15000 km/ 12 months
  • Code: RE7R01A 7/1
FX50, S51 (2011-2013)
  • Use: Normal
  • Capacity 11,3 liter
  • Check 15000 km/ 12 months
  • Code: RE7R01B 7/1
FX30d, S51 (2010-2013)
  • Use: Normal
  • Capacity 9,2 liter
  • Check 20000 km/ 12 months
  • Code: RE7R01A 7/1
FX30d, S51 (2009-2010)
  • Use: Normal
  • Capacity 9,2 liter
  • Check 15000 km/ 12 months
  • Code: RE7R01A 7/1
FX37, S51 (2008-2011)
  • Use: Normal
  • Capacity 9,2 liter
  • Check 15000 km/ 12 months
  • Code: RE7R01A 7/1
FX50, S51 (2008-2011)
  • Use: Normal
  • Capacity 11,3 liter
  • Check 15000 km/ 12 months
  • Code: RE7R01B 7/1

Additional Notes

  • All six configurations share a 15,000 km or 12-month check interval under normal use conditions, with one exception: the INFINITI FX30d S51 covering model years 2010-2013 carries an extended check interval of 20,000 km or 12 months, the longest interval listed across the entire FX S51 automatic transmission fluid specifications.
  • The FX30d and FX37 variants are each specified at a 9.2-liter automatic transmission fluid capacity, a figure consistent with a full-system service fill that accounts for fluid retained within the torque converter, valve body, and transmission cooler lines in addition to the main sump.
  • The INFINITI FX50 S51 carries a notably higher automatic transmission fluid capacity of 11.3 liters, approximately 2.1 liters more than the FX30d and FX37 configurations, reflecting the larger transmission assembly paired with the 5.0-liter V8 engine.
  • The FX30d S51 appears across two distinct specification rows divided at the 2010 model year. The earlier 2009-2010 row and the later 2010-2013 row share the same 9.2-liter capacity, with the interval difference being the only distinguishing factor between the two entries.
  • The FX37 S51 is similarly split into two rows at the 2011 model year, covering 2008-2011 and 2011-2013 respectively. Both rows carry identical specifications of 9.2 liters and a 15,000 km or 12-month check interval, meaning no change in fluid capacity or service frequency was introduced at that model year boundary.
  • The FX50 S51 is also divided at the 2011 model year into two rows, and like the FX37, both the 2008-2011 and 2011-2013 entries retain the same 11.3-liter capacity and 15,000 km or 12-month check interval with no variation across the split.

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