AMC Ambassador

Differential fluid capacity & service interval

AMC Ambassador differential fluid capacity is 1,9 liters. Service intervals include 6400 km, 8000 km/5 months, 9600 km, and intervals varying by configuration. The data covers 14 configurations.

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

TypeSpecifications
  • Ambassador 258 Six (1971-1974)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 8000 km/ 5 months
  • Ambassador 258 Six (1971-1974)
  • Rear, limited-slip
  • Use: Normal
  • Capacity 1,9 liter
  • Check 8000 km/ 5 months
  • Code: Twin-Grip
  • Ambassador 304 V8 (1971-1974)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 8000 km/ 5 months
  • Ambassador 304 V8 (1971-1974)
  • Rear, limited-slip
  • Use: Normal
  • Capacity 1,9 liter
  • Check 8000 km/ 5 months
  • Code: Twin-Grip
  • Ambassador 360 V8 (1971-1974)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 9600 km
  • Ambassador 360 V8 (1971-1974)
  • Rear, limited-slip
  • Use: Normal
  • Capacity 1,9 liter
  • Check 9600 km
  • Code: Twin-Grip
  • Ambassador 401 V8 (1971-1974)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 8000 km/ 5 months
  • Ambassador 401 V8 (1971-1974)
  • Rear, limited-slip
  • Use: Normal
  • Capacity 1,9 liter
  • Check 8000 km/ 5 months
  • Code: Twin-Grip
  • Ambassador 232 Six (1968-1970)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 6400 km
  • Ambassador 232 Six (1968-1970)
  • Rear, limited-slip
  • Use: Normal
  • Capacity 1,9 liter
  • Check 6400 km
  • Code: Twin-Grip
  • Ambassador 290 V8 (1968-1970)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 6400 km
  • Ambassador 290 V8 (1968-1970)
  • Rear, limited-slip
  • Use: Normal
  • Capacity 1,9 liter
  • Check 6400 km
  • Code: Twin-Grip
  • Ambassador 343 V8 (1968-1970)
  • Rear
  • Use: Normal
  • Capacity 1,9 liter
  • Check 6400 km
  • Ambassador 343 V8 (1968-1970)
  • Rear, limited-slip
  • Use: Normal
  • Capacity 1,9 liter
  • Check 6400 km
  • Code: Twin-Grip

Additional Notes

  • The AMC Ambassador rear differential fluid capacity is 1.9 liters across all engine configurations from 1968-1974, covering both standard and limited-slip differentials. A consistent capacity across six-cylinder and V8 applications indicates a common rear axle housing was used throughout the model range.
  • Standard and limited-slip rear differentials share identical capacity figures within each engine variant. The distinction between the two differential types is relevant to fluid specification rather than volume, as limited-slip units require a friction-modifier additive not needed in open differentials.
  • The 1968-1970 models equipped with the 232 Six and 290 V8 carry a check interval of 6400 km with no time-based component. The absence of a month-based interval means service scheduling for those configurations was based solely on distance traveled.
  • The 343 V8, also a 1968-1970 configuration, shares the 6400 km check interval seen in the other early-generation engines. All three 1968-1970 engine variants align on the same interval regardless of displacement.
  • With the 1971-1974 model years, the check interval format changed for several engines to include both a distance and a time component. The 258 Six and 304 V8 specify 8000 km or 5 months, whichever comes first, meaning low-mileage vehicles are still subject to a time-triggered service.
  • The 401 V8 for 1971-1974 also carries the 8000 km or 5 months interval, placing it in the same service schedule as the 258 Six and 304 V8 despite being the largest displacement engine in the lineup.
  • The 360 V8 for 1971-1974 stands apart from the other post-1970 engines with a check interval of 9600 km and no accompanying time limit. At 9600 km, the interval is the longest of any configuration in the full 1968-1974 range.
  • The shift from 6400 km intervals in 1968-1970 to 8000 km or 9600 km intervals in 1971-1974 reflects a general extension of rear differential service intervals across the generation change, regardless of whether the drivetrain included a limited-slip unit.

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