Lamborghini 400 GT

Differential fluid capacity & service interval

Lamborghini 400 GT differential fluid capacity is 1,55 liters. Service intervals require a change every 6000 miles. The data covers 2 configurations.

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

TypeSpecifications
  • 400 GT (1966-1968)
  • Rear (Salisbury)
  • Use: Normal
  • Capacity 1,55 liter
  • Change 6000 miles
  • Code: 4HA
  • 400 GT (1966-1968)
  • Rear, limited slip (Salisbury)
  • Use: Normal
  • Capacity 1,55 liter
  • Change 6000 miles
  • Code: 4HA

Additional Notes

  • The Lamborghini 400 GT rear differential uses a Salisbury-type unit, which is a hypoid gear differential design commonly found in performance and grand touring vehicles of the era, known for its strength and compact packaging.
  • The rear differential fluid capacity is 1.55 liters across both the standard and limited-slip Salisbury configurations in the 1966-1968 model years.
  • The shared 1.55-liter capacity between the standard and limited-slip variants indicates a physically similar housing size, with the limited-slip clutch pack occupying internal space without meaningfully altering the total fluid volume required.
  • Under normal use conditions, the specified change interval for the rear differential fluid is 6,000 miles, applying equally to both the open and limited-slip Salisbury differentials.
  • A 6,000-mile differential fluid change interval is relatively short by general automotive standards, reflecting the performance demands placed on the drivetrain of a 1960s grand touring vehicle.
  • The limited-slip differential variant carries the same 6,000-mile service interval as the standard unit under normal use conditions, despite limited-slip differentials typically requiring more frequent attention due to friction modifier degradation in the clutch pack.

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