Datsun (Nissan) Fairlady, SP(L) 311/SR(L) 311

Coolant capacity & service interval

Datsun (Nissan) Fairlady, SP(L) 311/SR(L) 311 coolant capacity is 8 liter. Service intervals include checking at 5000 km and changing at 40000 km. The data covers 2 configurations.

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

TypeSpecifications
Fairlady 2000, SR(L) 311 (1967-1970)
  • Use: Normal
  • Capacity 8 liter
  • Check 5000 km
  • Change 40000 km
Fairlady 1600, SP(L) 311 (1965-1970)
  • Use: Normal
  • Capacity 8 liter
  • Check 5000 km
  • Change 40000 km

Additional Notes

  • Both the Fairlady 1600 SP(L) 311 and the Fairlady 2000 SR(L) 311 share an identical cooling system capacity of 8 liters, which represents the total fluid volume of the cooling circuit including the radiator, engine block passages, and hoses.
  • The Datsun (Nissan) Fairlady 1600 SP(L) 311, covering model years 1965-1970, carries a coolant check interval of every 5,000 km under normal use conditions.
  • The Fairlady 2000 SR(L) 311, spanning 1967-1970, shares the same 5,000 km check interval and 40,000 km change interval as the 1600 variant, despite being a different engine displacement model.
  • A 40,000 km coolant change interval, as specified for both configurations under normal use, reflects a relatively extended service cycle consistent with ethylene glycol-based coolants that were standard practice in mid-to-late 1960s automotive engineering.
  • The normal use condition tied to the 40,000 km change interval applies to both the SP(L) 311 and SR(L) 311, meaning the interval is not adjusted for more demanding operating environments in the listed specifications.
  • An 8-liter cooling system capacity in a 1960s sports roadster platform indicates a moderately sized circuit, consistent with inline four-cylinder engines of that era where thermal management demands were lower than in larger displacement or forced-induction configurations.

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