Triumph Herald

Differential fluid capacity & service interval

Triumph Herald differential fluid capacity is 0,57 liter. Service intervals include checking at 10000 km and changing at 20000 km. The data covers 5 configurations.

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

TypeSpecifications
  • Herald 13/60 (1967-1971)
  • Rear
  • Use: Normal
  • Capacity 0,57 liter
  • Check 10000 km
  • Change 20000 km
  • Herald 12/50 (1964-1967)
  • Rear
  • Use: Normal
  • Capacity 0,57 liter
  • Check 10000 km
  • Change 20000 km
  • Herald 1200 (1961-1970)
  • Rear
  • Use: Normal
  • Capacity 0,57 liter
  • Check 10000 km
  • Change 20000 km
  • Herald 948 (25 kW) (1959-1964)
  • Rear
  • Use: Normal
  • Capacity 0,57 liter
  • Check 10000 km
  • Change 20000 km
  • Herald 948 (29 kW) (1959-1964)
  • Rear
  • Use: Normal
  • Capacity 0,57 liter
  • Check 10000 km
  • Change 20000 km

Additional Notes

  • The Triumph Herald rear differential holds 0.57 liters across all listed variants, spanning the Herald 948, Herald 1200, Herald 12/50, and Herald 13/60. A capacity at this scale is characteristic of a compact rear axle unit, consistent with the Herald's lightweight construction.
  • The 0.57-liter figure represents a service fill capacity, meaning the volume of fluid the differential housing holds during normal operation rather than a larger overhaul or bench-fill quantity.
  • Under normal use conditions, a fluid level check is specified at every 10,000 km across all five configurations. A periodic check interval of this frequency reflects standard practice for monitoring seal integrity and fluid loss in a rear differential without a full drain-and-refill.
  • The fluid change interval under normal use conditions is set at 20,000 km for every listed Herald variant. A change interval at double the check interval is a common service pattern, where level verification precedes the eventual full replacement cycle.
  • The Herald 948 appears in two distinct power outputs, 25 kW and 29 kW, both covering the 1959-1964 period. Despite the difference in engine output, both share an identical rear differential capacity of 0.57 liters and the same 10,000 km check and 20,000 km change intervals.
  • The Herald 1200, produced from 1961-1970, and the Herald 12/50, produced from 1964-1967, are separate variants yet carry the same rear differential specifications in every respect, indicating a shared axle assembly between the two.
  • The Herald 13/60, covering 1967-1971, is the latest variant in the listed range and maintains the same 0.57-liter capacity and service intervals as all earlier Herald configurations, pointing to continuity in the rear axle design across the model's production span.

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