Morris Isis

Coolant capacity & service interval

The Morris Isis coolant specification covers a capacity of 13.6 liters. The data includes two configurations for this model.

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

TypeSpecifications
Isis Saloon, Series II (1956-1958)
  • Use: Normal
  • Capacity 13,6 liter
Isis Traveller, Series II (1956-1958)
  • Use: Normal
  • Capacity 13,6 liter

Additional Notes

  • The Morris Isis Series II cooling system holds 13.6 liters of coolant across both the Saloon and Traveller body styles for the 1956-1958 model years.
  • A 13.6-liter cooling capacity is relatively substantial for a passenger car of the mid-1950s era, reflecting the demands of the larger six-cylinder engine fitted to the Isis range.
  • The capacity figure of 13.6 liters applies under normal use conditions for both the Saloon and Traveller variants, meaning the specification assumes standard operating environments rather than severe or extreme duty cycles.
  • The identical coolant capacity across the Saloon and Traveller body styles indicates both configurations share the same engine and cooling circuit dimensions, with no variation introduced by the differing body structures.

Other Systems