Hudson Hornet

Differential fluid capacity & service interval

Hudson Hornet differential fluid capacity ranges from 1,4 kg to 1,9 liter. Service intervals include a check at 1000 miles and a change at 10000 miles. The data covers 5 configurations.

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

TypeSpecifications
  • Hornet Special V8 (1957-1957)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 1000 miles
  • Hornet 6 (1955-1957)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 1000 miles
  • Change 10000 miles
  • Hornet 6 Twin H-Power (1955-1957)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 1000 miles
  • Change 10000 miles
  • Hornet Special V8 (1955-1956)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 1000 miles
  • Change 10000 miles
  • Hornet (1951-1954)
  • Rear
  • Use: Normal
  • Capacity 1,6 kg
  • Capacity 1,4 kg (Hydra-Matic models)
  • Check 1000 miles
  • Change 10000 miles

Additional Notes

  • The Hudson Hornet (1951-1954) rear differential capacity is listed in weight rather than volume, at 1.6 kg for standard transmission models. Weight-based fluid measurements were occasionally used in mid-century service documentation as an alternative to volumetric figures.
  • Hornet (1951-1954) models equipped with Hydra-Matic transmission carry a reduced rear differential capacity of 1.4 kg, compared to 1.6 kg on non-Hydra-Matic versions. The Hydra-Matic was an automatic transmission option, and the capacity difference suggests a distinct rear axle assembly was paired with that drivetrain configuration.
  • From 1955 onward, all Hornet configurations share a rear differential capacity of 1.9 liters, expressed in volume rather than the weight-based measurement used for the 1951-1954 generation.
  • The Hornet 6, Hornet 6 Twin H-Power, and Hornet Special V8 for 1955-1957 all carry identical rear differential capacities of 1.9 liters, indicating no variation in axle fill volume across those engine and induction configurations.
  • A check interval of 1,000 miles appears across all listed configurations from 1951-1957, applying under normal use conditions. At mid-century service standards, a 1,000-mile check interval for differential fluid reflected routine inspection practices common to that era.
  • A change interval of 10,000 miles under normal use conditions is specified for the 1951-1954 Hornet and for the 1955-1956 Hornet 6, Hornet 6 Twin H-Power, and Hornet Special V8 rear differentials.
  • The Hornet Special V8 in its 1957 configuration lists only a check interval of 1,000 miles, with no change interval present in the specifications, distinguishing it from the 1955-1956 V8 variant which carries both a check and a change interval.

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