BMC Austin/Morris 250 JU

Coolant capacity & service interval

BMC Austin/Morris 250 JU coolant capacity ranges from 6,25 to 6,82 liters. The service interval for coolant is 12 months. The data covers 4 configurations.

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

TypeSpecifications
250 JU (1971-1974)
  • Use: Normal
  • Capacity 6,82 liter (+ heater)
  • Capacity 6,25 liter (Without heater)
  • Change 12 months
250 JU Diesel (1971-1974)
  • Use: Normal
  • Capacity 6,82 liter (+ heater)
  • Capacity 6,25 liter (Without heater)
  • Change 12 months
250 JU (1967-1971)
  • Use: Normal
  • Capacity 6,82 liter (+ heater)
  • Capacity 6,25 liter (Without heater)
  • Change 12 months
250 JU Diesel (1967-1971)
  • Use: Normal
  • Capacity 6,82 liter (+ heater)
  • Capacity 6,25 liter (Without heater)
  • Change 12 months

Additional Notes

  • The BMC Austin/Morris 250 JU carries a coolant capacity of 6.82 liters when the heater circuit is included, and 6.25 liters when the heater is absent, a difference of 0.57 liters that reflects the additional fluid volume held within the heater core and its connecting hoses.
  • The 0.57-liter gap between the heater-equipped and heater-delete figures applies equally across all four configurations covered in the specifications, meaning neither the petrol nor the diesel variant, nor either production period, deviates from those two capacity values.
  • All four configurations share an identical coolant change interval of 12 months under normal use conditions, placing the service on an annual calendar-based schedule rather than a mileage-based one.
  • The petrol and diesel variants of the 250 JU share the same coolant capacity figures and the same 12-month change interval, indicating no difference in cooling system volume or service frequency between the two engine types.
  • The specifications are divided into two production periods, 1967-1971 and 1971-1974, for both the petrol and diesel variants, yet the coolant capacity values and the annual change interval remain unchanged across both periods for each engine type.

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