Opel Kapitän
Differential fluid capacity & service interval
Opel Kapitän differential fluid capacity ranges from 1,3 to 1,4 liters. Service intervals include 10000 km or 10000 km/6 months. The data covers 6 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
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Additional Notes
- The Opel Kapitän 2.6 (1964-1966) and Kapitän 2.8 (1966-1968) share an identical rear differential fluid capacity of 1.4 liters, indicating a consistent housing size across those two engine generations.
- The 1969-1970 variants, covering the 2.8 H and 2.8 S, carry a reduced rear differential capacity of 1.3 liters, a 0.1-liter decrease compared to the earlier 2.6 and 2.8 configurations.
- The 2.6 and the first 2.8 generation specify a check interval of every 10,000 km under normal use conditions, with no time-based component attached to that interval.
- The 1969-1970 models introduce a dual-condition check interval of 10,000 km or 6 months, whichever comes first under normal use, adding a calendar-based threshold absent from the earlier specifications.
- Both the standard rear differential and the limited-slip rear differential on the Kapitän 2.8 H (1969-1970) share the same 1.3-liter capacity and the same 10,000 km/6-month check interval, meaning the limited-slip variant carries no distinct fill volume in the specifications.
- The same pattern holds for the Kapitän 2.8 S (1969-1970), where the standard and limited-slip rear differentials are both rated at 1.3 liters with a 10,000 km/6-month check interval, mirroring the 2.8 H entries exactly.