Mercedes-Benz 190 SL, W121-190SL (EU)
Coolant capacity & service interval
Mercedes-Benz 190 SL, W121-190SL (EU) models require 10 liters of coolant. The data covers 1 configuration.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 190 SL, R121 (1955-1963) |
|
Additional Notes
- The Mercedes-Benz 190 SL, W121-190SL cooling system carries a capacity of 10 liters, which represents the total volume of the cooling circuit including the engine block, cylinder head passages, radiator, and hoses filled during a full service.
- The 10-liter figure applies to the R121 across the full 1955-1963 production span, meaning no variation in coolant capacity existed between early and late examples of the model.
- A capacity stated under normal use conditions indicates the figure reflects standard operating fill rather than a dry or overhaul scenario requiring additional volume to prime an empty system from scratch.