INFINITI M, Y51 (EU)

Brake fluid capacity & service interval

INFINITI M, Y51 (EU) models utilize brake fluid. Service intervals include checks at 15000 km/12 months or 20000 km/12 months, and changes at 15000 km/12 months, 20000 km/12 months, 30000 km/24 months, or 40000 km/24 months. The data covers 12 configurations.

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

TypeSpecifications
M35h (2012-2014)
  • Use: Normal
  • Between min and max.
  • Check 15000 km/ 12 months
  • Change 30000 km/ 24 months
M35h (2012-2014)
  • Use: Severe
  • Between min and max.
  • Change 15000 km/ 12 months
M37 (2012-2014)
  • Use: Normal
  • Between min and max.
  • Check 15000 km/ 12 months
  • Change 30000 km/ 24 months
M37 (2012-2014)
  • Use: Severe
  • Between min and max.
  • Change 15000 km/ 12 months
M30d (2011-2014)
  • Use: Normal
  • Between min and max.
  • Check 20000 km/ 12 months
  • Change 40000 km/ 24 months
M30d (2011-2014)
  • Use: Severe
  • Between min and max.
  • Change 20000 km/ 12 months
M35h (2011-2012)
  • Use: Normal
  • Between min and max.
  • Check 15000 km/ 12 months
  • Change 30000 km/ 24 months
M35h (2011-2012)
  • Use: Severe
  • Between min and max.
  • Change 15000 km/ 12 months
M30d (2010-2011)
  • Use: Normal
  • Between min and max.
  • Check 15000 km/ 12 months
  • Change 30000 km/ 24 months
M30d (2010-2011)
  • Use: Severe
  • Between min and max.
  • Change 15000 km/ 12 months
M37 (2010-2012)
  • Use: Normal
  • Between min and max.
  • Check 15000 km/ 12 months
  • Change 30000 km/ 24 months
M37 (2010-2012)
  • Use: Severe
  • Between min and max.
  • Change 15000 km/ 12 months

Additional Notes

  • Brake fluid level across all INFINITI M Y51 (EU) configurations is specified as "between min and max" rather than a fixed volume, which reflects the nature of hydraulic brake system reservoirs where fluid level is monitored visually against reservoir markings rather than measured by quantity.
  • The M30d covering model years 2010-2011 carries a normal-use change interval of 30000 km or 24 months, while the revised M30d specification introduced for 2011-2014 extends the normal-use change interval to 40000 km or 24 months, representing the most notable interval difference across all configurations listed.
  • The M30d 2011-2014 normal-use check interval is also extended to 20000 km or 12 months, compared to 15000 km or 12 months for the earlier 2010-2011 variant, meaning both the inspection and replacement thresholds were revised upward between those specification sets.
  • Under severe-use conditions, the M30d 2010-2011 specifies a change interval of 15000 km or 12 months, while the M30d 2011-2014 severe-use interval is set at 20000 km or 12 months, again reflecting the same upward revision seen in the normal-use figures for that engine.
  • Severe-use specifications across all configurations list only a change interval with no separate check interval, whereas normal-use specifications include both a check interval and a longer change interval. The absence of a standalone check step under severe use aligns with the logic that the shorter change cycle itself serves as the primary monitoring event.
  • The M35h and M37 configurations share identical brake fluid service intervals across their respective model year ranges, with normal-use intervals set at 15000 km or 12 months for checks and 30000 km or 24 months for changes, and severe-use intervals set at 15000 km or 12 months for changes.
  • The M35h spans two overlapping specification sets, one for 2011-2012 and one for 2012-2014, yet the brake fluid intervals are identical across both sets, indicating no revision was made to brake fluid servicing requirements for that engine between those periods.
  • Brake fluid is hygroscopic, meaning it absorbs moisture from the atmosphere over time, which lowers its boiling point and can compromise braking performance. The time-based component of the intervals, expressed in months alongside distance thresholds, accounts for fluid degradation that occurs regardless of mileage accumulation.

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