BYD Dolphin

Coolant capacity & service interval

BYD Dolphin coolant capacity ranges from 3,1 to 3,5 liters. Service intervals include changes at 10000 km or 48 months and 100000 km or 48 months, with checks at 20000 km or 12 months. The data covers 4 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • Dolphin (150 kW) (2023- )
  • Electric motor
  • Use: Normal
  • Capacity 3,5 liter
  • Change 10000 km/ 48 months
Dolphin 46 kWh (2023- )
  • Use: Normal
  • Capacity 3,1-3,5 liter
  • Check 20000 km/ 12 months
  • Change 100000 km/ 48 months
  • Dolphin (130 kW) (2021- )
  • Electric motor
  • Use: Normal
  • Capacity 3,5 liter
  • Change 10000 km/ 48 months
  • Dolphin (70 kW) (2021- )
  • Electric motor
  • Use: Normal
  • Capacity 3,5 liter
  • Change 10000 km/ 48 months

Additional Notes

  • Across the 70 kW, 130 kW, and 150 kW motor variants, the electric motor cooling system holds 3.5 liters of coolant, a figure that represents a service fill capacity for a sealed liquid-cooled drive unit rather than a large combustion engine cooling circuit.
  • The BYD Dolphin 70 kW and 130 kW variants, both introduced from 2021, share an identical coolant capacity of 3.5 liters and an identical change interval of 10,000 km or 48 months under normal use conditions.
  • The 150 kW variant, introduced from 2023, carries the same 3.5-liter capacity and 10,000 km / 48-month change interval as the lower-output motor variants, despite the higher power output.
  • The Dolphin 46 kWh variant, introduced from 2023, specifies a capacity range of 3.1 to 3.5 liters rather than a fixed value, indicating a fill tolerance or variation depending on the exact configuration at the time of service.
  • The 46 kWh variant introduces a separate inspection interval of 20,000 km or 12 months, which is a periodic check rather than a fluid replacement, applied under normal use conditions.
  • The change interval for the 46 kWh variant is 100,000 km or 48 months under normal use, a substantially longer mileage threshold compared to the 10,000 km interval specified for the motor cooling systems on the other three variants.
  • The 48-month time limit appears across all four variants regardless of mileage interval differences, meaning the calendar-based threshold is a consistent ceiling for coolant service life across the Dolphin range covered by these specifications.
  • The note field distinguishes the 46 kWh variant's circuit as a general "cooling system" rather than a "cooling system, electric motor" designation used for the three power-output variants, reflecting a difference in how the cooled component is categorized within the service data.

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