Opel Diplomat A
Brake fluid capacity & service interval
Opel Diplomat A uses brake fluid with a capacity range of 0,42 to 0,46 liters. The service interval is 20000 km. The data covers 3 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Diplomat A 5.4 V8 (1965-1968) |
|
| Diplomat A 2.8 HL (1964-1968) |
|
| Diplomat A 4.6 V8 (1964-1968) |
|
Additional Notes
- The Opel Diplomat A hydraulic brake system capacities vary by engine configuration, with the 2.8 HL requiring 0.42 liter and both V8 variants requiring 0.46 liter.
- The 0.42-liter figure for the 2.8 HL represents a notably smaller brake fluid volume compared to the V8 configurations, consistent with the differences in braking hardware scale between a six-cylinder and a V8 drivetrain.
- Both the 4.6 V8 and the 5.4 V8 share an identical 0.46-liter brake fluid capacity, despite the displacement difference between the two engine options.
- All three configurations carry a uniform service interval of 20,000 km under normal use conditions, applying equally across the 2.8 HL, 4.6 V8, and 5.4 V8 variants.
- The 5.4 V8 entered production in 1965, making the 1964 model year exclusive to the 2.8 HL and 4.6 V8 as far as brake fluid specifications are concerned.
- The 2.8 HL and 4.6 V8 share a production span of 1964-1968, while the 5.4 V8 covers a shorter range of 1965-1968 within the same generation.