AMC Gremlin

Differential fluid capacity & service interval

AMC Gremlin differential fluid capacity ranges from 1,4 to 1,9 liters. Service intervals include checks at 6400 km and 9600 km. The data covers 9 configurations.

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

TypeSpecifications
  • Gremlin 121 (1977-1978)
  • Rear
  • Use: Normal
  • Capacity 1,4 liter
  • Check 9600 km
  • Gremlin 258 (1971-1978)
  • Rear
  • Use: Normal
  • Capacity 1,4 liter
  • Check 9600 km
  • Gremlin 258 (1971-1978)
  • Rear, limited-slip
  • Use: Normal
  • Capacity 1,4 liter
  • Check 9600 km
  • Code: Twin-Grip
  • Gremlin 304 V8 (1971-1976)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 9600 km
  • Gremlin 304 V8 (1971-1976)
  • Rear, limited-slip
  • Use: Normal
  • Capacity 1,9 liter
  • Check 9600 km
  • Code: Twin-Grip
  • Gremlin 199 (1970-1971)
  • Rear
  • Use: Normal
  • Capacity 1,4 liter
  • Check 6400 km
  • Gremlin 199 (1970-1971)
  • Rear, limited-slip
  • Use: Normal
  • Capacity 1,4 liter
  • Check 6400 km
  • Code: Twin-Grip
  • Gremlin 232 (1970-1978)
  • Rear
  • Use: Normal
  • Capacity 1,4 liter
  • Check 9600 km
  • Gremlin 232 (1970-1978)
  • Rear, limited-slip
  • Use: Normal
  • Capacity 1,4 liter
  • Check 9600 km
  • Code: Twin-Grip

Additional Notes

  • Across all AMC Gremlin engine configurations, the rear differential fluid capacity falls into one of two values: 1.4 liters for the four- and six-cylinder engines, and 1.9 liters for the 304 V8. The larger capacity in the V8 reflects a physically bigger rear axle housing paired with the higher-torque drivetrain.
  • The 304 V8 (1971-1976) rear differential, both standard and limited-slip variants, holds 1.9 liters of fluid, which is approximately 36 percent more than the 1.4-liter figure shared by every other Gremlin engine configuration listed.
  • The Gremlin 199 (1970-1971) carries a check interval of 6400 km under normal use conditions for the rear differential, applying equally to both the standard and limited-slip versions of that axle.
  • The 6400 km check interval on the Gremlin 199 is shorter than the 9600 km interval specified for all other engine variants, meaning the 199-equipped models required more frequent differential fluid inspections under the same normal use condition.
  • The Gremlin 121 (1977-1978) shares the 1.4-liter capacity and 9600 km check interval with the 232 and 258 six-cylinder configurations, despite being a smaller-displacement engine introduced later in the model range.
  • Limited-slip differentials across the Gremlin 199, 232, 258, and 304 V8 configurations carry identical capacity and check interval figures to their standard rear differential counterparts within each respective engine family.
  • The Gremlin 232 (1970-1978) and Gremlin 258 (1971-1978) both specify a 9600 km check interval and 1.4-liter capacity for normal use, with no difference in differential service specifications between the two inline-six displacements.

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