INFINITI M, Y34 (USA)

Power steering fluid capacity & service interval

INFINITI M, Y34 (USA) models require power steering fluid with a capacity range between min and max. Service intervals include checks at 30000 miles or 24 months and 7500 miles or 6 months. The data covers 4 configurations.

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

TypeSpecifications
M45 (2004-2005)
  • Use: Normal
  • Between min and max.
  • Check 30000 miles/ 24 months
M45 (2004-2005)
  • Use: Severe
  • Between min and max.
  • Check 7500 miles/ 6 months
M45 (2003-2003)
  • Use: Normal
  • Between min and max.
  • Check 30000 miles/ 24 months
M45 (2003-2003)
  • Use: Severe
  • Between min and max.
  • Check 7500 miles/ 6 months

Additional Notes

  • The INFINITI M45 (Y34, USA) power steering fluid specification does not define a fixed fill volume. Instead, the level is maintained between the reservoir's minimum and maximum marks, which is standard practice for hydraulic power steering systems where fluid is not consumed under normal operation.
  • For the 2003 M45 under normal use conditions, the power steering fluid check interval is set at 30,000 miles or 24 months, whichever comes first.
  • Under severe use conditions, the 2003 M45 requires a power steering fluid check at 7,500 miles or 6 months — a notably shorter interval compared to normal use, reflecting the greater thermal and mechanical stress placed on hydraulic fluid in demanding driving environments.
  • The 2004-2005 M45 carries the same normal-use check interval of 30,000 miles or 24 months, matching the 2003 specification without alteration across those model years.
  • Severe-use intervals for the 2004-2005 M45 remain at 7,500 miles or 6 months, consistent with the 2003 severe-use schedule.

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