Alfa Romeo 159, 939 (EU)

Differential fluid capacity & service interval

Alfa Romeo 159, 939 (EU) differential fluid capacity is 0,75 liter. Service intervals consist of 24 months or 30000 km. The data covers 2 configurations.

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

TypeSpecifications
  • 159 2.4 JTDm 20V Q4 (2007-2010)
  • Rear
  • Use: Normal
  • Capacity 0,75 liter
  • Check 24 months/ 30000 km
  • 159 3.2 JTS Q4 (2005-2010)
  • Rear
  • Use: Normal
  • Capacity 0,75 liter
  • Check 24 months/ 30000 km

Additional Notes

  • Both Q4 variants in the Alfa Romeo 159 939 (EU) lineup carry a rear differential fluid capacity of 0.75 liter, which is a relatively modest volume consistent with a compact rear differential unit rather than a full axle assembly overhaul fill.
  • The 2.4 JTDm 20V Q4 covers model years 2007-2010, while the 3.2 JTS Q4 spans 2005-2010, meaning the petrol variant has a longer production window within the 2005-2010 period covered by these specifications.
  • Both configurations share an identical service interval for the rear differential fluid check: every 24 months or 30,000 km under normal use conditions, whichever comes first.
  • The 24-month time-based threshold in the check interval means that even low-mileage vehicles are subject to a periodic inspection, as the calendar limit can be reached before the distance limit in light-use scenarios.
  • The 30,000 km distance interval is relatively short for a differential fluid check, reflecting a maintenance schedule oriented toward preserving fluid condition in an all-wheel-drive rear differential application.
  • The identical 0.75 liter capacity across both the diesel 2.4 JTDm 20V Q4 and the petrol 3.2 JTS Q4 suggests the rear differential unit is shared between the two drivetrains despite their differing engine outputs and fuel types.

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