Hudson Hornet

Automatic transmission fluid capacity & service interval

Hudson Hornet automatic transmission fluid capacity ranges from 10,4 to 10,9 liters. Service intervals include checking at 1000 miles and changing at 25000 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)
  • Use: Normal
  • Capacity 10,9 liter
  • Check 1000 miles
  • Change 25000 miles
  • Code: Hydra-Matic 4/1
Hornet 6 (1955-1957)
  • Use: Normal
  • Capacity 10,4 liter
  • Check 1000 miles
  • Change 25000 miles
  • Code: Hydra-Matic 4/1
Hornet 6 Twin H-Power (1955-1957)
  • Use: Normal
  • Capacity 10,4 liter
  • Check 1000 miles
  • Change 25000 miles
  • Code: Hydra-Matic 4/1
Hornet Special V8 (1955-1956)
  • Use: Normal
  • Capacity 10,4 liter
  • Check 1000 miles
  • Change 25000 miles
  • Code: Hydra-Matic 4/1
Hornet (1951-1954)
  • Use: Normal
  • Capacity 10,4 liter
  • Check 1000 miles
  • Change 25000 miles
  • Code: Hydra-Matic 4/1

Additional Notes

  • The Hudson Hornet automatic transmission fluid capacity holds at 10.4 liters across the 1951-1954 Hornet, the 1955-1957 Hornet 6, the 1955-1957 Hornet 6 Twin H-Power, and the 1955-1956 Hornet Special V8 configurations.
  • The 1957 Hornet Special V8 carries a slightly higher automatic transmission fluid capacity of 10.9 liters, compared to the 10.4 liters specified for all other configurations across the 1951-1957 range.
  • A 10.4-liter automatic transmission fluid capacity is a relatively large fill volume, consistent with the full-system capacity figures typical of mid-century American automatic transmissions, which included a torque converter holding a significant portion of the total fluid volume.
  • The 10.9-liter capacity on the 1957 Hornet Special V8 reflects a modest but measurable increase over the standard figure, which in transmission service terms can indicate a physically larger sump, a revised torque converter, or a different transmission unit altogether.
  • All five configurations share a check interval of 1,000 miles under normal use conditions, meaning fluid level verification was expected relatively soon after a service event.
  • The change interval across all configurations is set at 25,000 miles under normal use conditions, a figure that applied uniformly regardless of whether the configuration used a six-cylinder or V8 engine.
  • The 1,000-mile check interval paired with a 25,000-mile change interval suggests a wide gap between routine level monitoring and full fluid replacement, which was a common service pattern for automatic transmissions of the 1950s era.
  • All specifications listed apply to normal use conditions, meaning the capacity and interval values for both the check and change intervals are tied specifically to that operating classification.

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