Honda NX
Coolant capacity & service interval
Honda NX coolant capacity ranges from 1 liter to 1,32 liters. Service intervals for coolant changes are 24 months and 36 months. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| NX500 (2024- ) |
|
| NX 250 Dominator (1987-1993) |
|
Additional Notes
- The Honda NX 250 Dominator carries a coolant capacity of 1 liter for its cooling system, a figure typical of small single-cylinder or parallel-twin engines where the cooling jacket volume is modest by design.
- The NX 250 Dominator's normal-use service interval is set at 24 months, meaning coolant replacement is tied to calendar time rather than mileage, which is standard practice for ethylene glycol-based coolants that degrade through oxidation and pH drop over time regardless of riding frequency.
- The NX500 introduced from 2024 holds a coolant capacity of 1.32 liters, a larger fill volume than the NX 250 Dominator's 1 liter, reflecting the greater displacement and correspondingly larger cooling circuit of the engine.
- Under normal-use conditions, the NX500 specifies a 36-month coolant change interval, which is 12 months longer than the 24-month interval assigned to the NX 250 Dominator, indicating a difference in the coolant formulation or system design between the two models.
- Both configurations are designated for normal-use conditions only, with no separate severe-use interval listed for either the NX 250 Dominator or the NX500 in the cooling system specifications.