Honda S600 / S800
Differential fluid capacity & service interval
Honda S600 / S800 differential fluid capacity is 1 liter. Service intervals include checks at 9000 km and changes at 1000 km, 3000 km, and 18000 km. The data covers 4 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
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Additional Notes
- Both the Honda S600 and S800 share an identical rear differential fluid capacity of 1 liter, a figure that reflects a service fill level rather than a full overhaul quantity in a larger drivetrain assembly.
- Under normal use conditions, the rear differential on the S600 (1964-1966) follows a check interval of 9,000 km and a change interval of 18,000 km.
- The S800 (1966-1970) carries the same normal-use check and change intervals as the S600, with fluid inspection at 9,000 km and a full change at 18,000 km.
- An initial service interval is specified for both models, requiring an early fluid change to remove metal particles and contaminants generated during the break-in period of new gear surfaces.
- The S600 initial service interval calls for a differential fluid change at 1,000 km, establishing an early maintenance point shortly after the vehicle enters service.
- The S800 initial service interval is set at 3,000 km, which is three times longer than the 1,000 km interval specified for the S600 under the same initial service condition.
- No capacity difference exists between the initial service and normal use rows for either model, as both reference the same 1-liter fill regardless of the service condition applied.