Riley Kestrel, ADO16

Coolant capacity & service interval

Riley Kestrel and ADO16 models utilize coolant with capacities ranging from 3,27 to 3,83 liters. Service intervals require checks every 5000 km or 3 months. The data covers 3 configurations.

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

TypeSpecifications
Kestrel 1100 Mk II (1967-1969)
  • Use: Normal
  • Capacity 3,83 liter (+ heater)
  • Capacity 3,27 liter (Without heater)
  • Check 5000 km/ 3 months
Kestrel 1300 Mk II (1967-1969)
  • Use: Normal
  • Capacity 3,83 liter (+ heater)
  • Capacity 3,27 liter (Without heater)
  • Check 5000 km/ 3 months
Kestrel 1100 Mk I (1962-1967)
  • Use: Normal
  • Capacity 3,57 liter (+ heater)

Additional Notes

  • The Riley Kestrel 1100 Mk I cooling system capacity is listed at 3.57 liters, with the notation that a heater adds to that figure, meaning the 3.57-liter value already assumes heater circuit inclusion.
  • The Kestrel 1100 Mk II and 1300 Mk II both share a dual-capacity specification: 3.83 liters with a heater and 3.27 liters without, a difference of 0.56 liters attributable to the heater circuit volume.
  • The Mk I capacity of 3.57 liters with heater is lower than the Mk II figure of 3.83 liters with heater, reflecting a measurable increase in cooling system volume between the two generations of the 1100 engine variant.
  • The Kestrel 1100 Mk I specifications carry no check interval, whereas both Mk II variants specify a coolant check at every 5,000 km or 3 months under normal use conditions, whichever comes first.
  • The 5,000 km or 3-month check interval on the Mk II variants is a monitoring interval rather than a full coolant change, meaning the specification calls for inspection of the coolant level rather than a drain-and-refill service at that point.
  • The 1300 Mk II and 1100 Mk II share identical cooling system capacities and check intervals despite differing engine displacements, indicating the cooling circuit dimensions were not altered between the two engine sizes in the Mk II generation.