Iso Grifo

Manual transmission fluid capacity & service interval

Iso Grifo manual transmission fluid capacity is 1,5 liters. Service intervals include checking at 5000 km and changing at 20000 km. 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 1,5 liter
  • Check 5000 km
  • Change 20000 km
  • Code: 4/1
Grifo Lusso GL340 (1963-1974)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 5000 km
  • Change 20000 km
  • Code: 4/1
Grifo Lusso GL350 (1963-1974)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 5000 km
  • Change 20000 km
  • Code: 4/1

Additional Notes

  • The Iso Grifo manual transmission fluid capacity is 1.5 liters across the GL300, GL340, and GL350 variants, a figure consistent with the compact gearbox housings typical of Italian grand touring cars of the 1963-1974 era.
  • A 1.5-liter capacity represents a service fill volume, meaning the amount of fluid required during a routine drain-and-refill procedure rather than a full overhaul or rebuild specification.
  • The GL300, GL340, and GL350 all share an identical 1.5-liter manual transmission fluid capacity, indicating no variation in gearbox fluid volume across the three Grifo Lusso variants covered by the specifications.
  • Under normal use conditions, the manual transmission fluid check interval is set at 5,000 km for all three Grifo Lusso variants.
  • The fluid change interval under normal use conditions is 20,000 km, applying uniformly to the GL300, GL340, and GL350 throughout the 1963-1974 model range.
  • The 5,000 km check interval relative to the 20,000 km change interval means the transmission fluid level is inspected four times between each scheduled fluid replacement under normal use conditions.

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