BYD Seal U
Coolant capacity & service interval
BYD Seal U requires coolant with a capacity range of 3,5 to 7,5 liters. The service interval is 100000 km or 48 months. The data covers 5 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Seal U (2024- ) |
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| Seal U DM-i 2WD (2024- ) |
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| Seal U DM-i AWD (2024- ) |
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Additional Notes
- The BYD Seal U (2024- ) carries a coolant capacity range of 3.5 to 4.5 liters for its cooling system, reflecting a fill tolerance rather than a fixed volume, which is common when system bleeding or residual fluid affects the final level.
- The Seal U DM-i variants in both 2WD and AWD configurations carry a notably larger 7.5-liter cooling system capacity, compared to the 3.5-4.5-liter range of the standard Seal U, indicating a more extensive thermal management circuit associated with the plug-in hybrid drivetrain.
- On top of the main 7.5-liter cooling circuit, the Seal U DM-i 2WD carries a separate 4.7-liter coolant capacity dedicated to the electric motor and associated systems, meaning the total coolant volume across both circuits is substantially higher than on the non-hybrid variant.
- The Seal U DM-i AWD shares the same 4.7-liter electric motor/system coolant capacity as the 2WD DM-i, confirming that the electric drivetrain cooling circuit capacity is consistent across both drivetrain configurations.
- All coolant change intervals across the Seal U lineup are specified at 100,000 km or 48 months under normal use conditions, whichever comes first, placing the service interval on a relatively long cycle typical of modern long-life coolant formulations.
- The Seal U DM-i AWD electric motor/system cooling circuit carries no change interval in the specifications, whereas the main 7.5-liter circuit on the same variant is assigned the 100,000 km/48-month interval.