Peugeot 604

Differential fluid capacity & service interval

Peugeot 604 differential fluid capacity is 1,55 liters. Service intervals include checking at 5000 km and 7500 km, and changing at 30000 km. The data covers 3 configurations.

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

TypeSpecifications
  • 604 D turbo (1978-1985)
  • Rear
  • Use: Normal
  • Capacity 1,55 liter
  • Check 5000 km
  • Change 30000 km
  • 604 Ti (1977-1985)
  • Rear
  • Use: Normal
  • Capacity 1,55 liter
  • Check 7500 km
  • Change 30000 km
  • 604 SL (1975-1985)
  • Rear
  • Use: Normal
  • Capacity 1,55 liter
  • Check 7500 km
  • Change 30000 km

Additional Notes

  • All three Peugeot 604 configurations share an identical rear differential fluid capacity of 1.55 liters, a figure consistent with a service fill rather than an overhaul capacity, as it reflects the amount needed to bring a drained but otherwise intact unit back to the correct operating level.
  • The fluid change interval is set at 30,000 km across the 604 D Turbo (1978-1985), 604 SL (1975-1985), and 604 Ti (1977-1985), all under normal use conditions.
  • The 604 D Turbo carries a check interval of 5,000 km under normal use, which is notably shorter than the 7,500 km check interval specified for both the 604 SL and 604 Ti.
  • The 604 SL and 604 Ti share identical rear differential service schedules, with a 7,500 km check interval and a 30,000 km change interval under normal use conditions.
  • The more frequent 5,000 km check interval on the 604 D Turbo, compared to the 7,500 km interval on the petrol variants, reflects the additional thermal and mechanical stress associated with turbocharged diesel operation, which can accelerate fluid degradation and make closer monitoring appropriate.

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