Fiat 125 (EU)

Automatic transmission fluid capacity & service interval

Fiat 125 (EU) automatic transmission fluid capacity ranges from 2,8 to 7,3 liters. Service intervals include checks at 5000 and 10000 km, and changes at 40000 km 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
125, 125A (1970-1972)
  • Use: Normal
  • Capacity 5,6 liter (Dry fill)
  • Capacity 2,8 liter (Service fill)
  • Check 5000 km
  • Change 40000 km/ 24 months
  • Code: 3/1
125 Special, 125B (1970-1972)
  • Use: Normal
  • Capacity 5,6 liter (Dry fill)
  • Capacity 2,8 liter (Service fill)
  • Check 5000 km
  • Change 40000 km/ 24 months
  • Code: 3/1
125, 125A (1967-1969)
  • Use: Normal
  • Capacity 5,6 liter (Dry fill)
  • Capacity 2,8 liter (Service fill)
  • Check 5000 km
  • Change 40000 km/ 24 months
  • Code: 3/1
125 Idroconvert, 125A (1967-1972)
  • Use: Normal
  • Capacity 7,3 liter (Dry fill)
  • Check 10000 km
  • Code: 3/1

Additional Notes

  • The Fiat 125 Idroconvert and 125A semi-automatic transmission carries a dry fill capacity of 7.3 liters, a figure that reflects the total fluid volume required when filling a fully drained or rebuilt unit from empty.
  • No service fill capacity is listed for the 125 Idroconvert and 125A semi-automatic configuration, meaning only the dry fill value of 7.3 liters appears in the specifications for that variant.
  • The 125 Special and 125B automatic transmission has a dry fill capacity of 5.6 liters, while the service fill capacity is 2.8 liters, exactly half the dry fill volume, indicating that a routine fluid change replaces only a portion of the total fluid held in the system.
  • The same 5.6-liter dry fill and 2.8-liter service fill figures apply equally to the 125 and 125A automatic transmission across both the 1967-1969 and 1970-1972 model year ranges.
  • A fluid level check interval of 5,000 km is specified under normal use conditions for all automatic transmission variants of the 125, 125A, and 125 Special and 125B.
  • The semi-automatic 125 Idroconvert and 125A carries a check interval of 10,000 km under normal use, twice the interval assigned to the fully automatic variants in the same lineup.
  • The automatic transmission fluid change interval for the 125, 125A, 125 Special, and 125B is set at 40,000 km or 24 months under normal use conditions, whichever comes first, combining both a distance and a time-based threshold.
  • No fluid change interval is listed for the semi-automatic 125 Idroconvert and 125A, as the specifications for that row include only a dry fill capacity and a check interval.

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