Iso Grifo

Coolant capacity & service interval

Iso Grifo coolant capacity is 18 liters. Service intervals include checks at 60000 km and changes at 100000 km or 60 months. The data covers 3 configurations.

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

TypeSpecifications
Grifo Lusso GL300 (1963-1974)
  • Use: Normal
  • Capacity 18 liter
  • Check 60000 km
  • Change 100000 km/ 60 months
Grifo Lusso GL340 (1963-1974)
  • Use: Normal
  • Capacity 18 liter
  • Check 60000 km
  • Change 100000 km/ 60 months
Grifo Lusso GL350 (1963-1974)
  • Use: Normal
  • Capacity 18 liter
  • Check 60000 km
  • Change 100000 km/ 60 months

Additional Notes

  • The Iso Grifo cooling system capacity across all three Lusso variants — GL300, GL340, and GL350 — is rated at 18 liters, a figure consistent with large-displacement V8 engines of that era, where greater coolant volume supports thermal management across extended high-load operation.
  • The GL300, GL340, and GL350 share an identical coolant check interval of 60,000 km under normal use conditions, meaning routine inspection of coolant level and condition falls on the same schedule regardless of engine variant.
  • Coolant change intervals for all three Lusso variants are specified at 100,000 km or 60 months, whichever comes first, reflecting a time-based ceiling that caps service life at five years even when the mileage threshold has not been reached.
  • The 60-month time limit on coolant changes is notable because it acknowledges that coolant degrades chemically over time independent of distance traveled, a relevant consideration for a low-production grand tourer that may accumulate kilometers slowly.
  • The uniform 18-liter capacity across the GL300, GL340, and GL350 suggests the cooling system architecture was not altered between engine configurations, pointing to a shared chassis and cooling circuit design across the Grifo Lusso range from 1963-1974.

Other Systems