Ferrari 308 GTS/GTB/GT4

Manual transmission fluid capacity & service interval

Ferrari 308 GTS/GTB/GT4 manual transmission fluid capacity is 4 liters. Service intervals include checking at 5000 km and changing at 15000 km. The data covers 3 configurations.

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

TypeSpecifications
308 GTB (1975-1984)
  • Use: Normal
  • Capacity 4 liter
  • Check 5000 km
  • Change 15000 km
  • Code: 5/1
308 GTS (1975-1984)
  • Use: Normal
  • Capacity 4 liter
  • Check 5000 km
  • Change 15000 km
  • Code: 5/1
308 GT4 (1974-1980)
  • Use: Normal
  • Capacity 4 liter
  • Check 5000 km
  • Change 15000 km
  • Code: 5/1

Additional Notes

  • The Ferrari 308 GT4, 308 GTB, and 308 GTS all share an identical manual transaxle fluid capacity of 4 liters, which is consistent with a service fill figure for a combined gearbox and differential unit in a mid-engine transaxle layout.
  • A 4-liter transaxle capacity is relatively modest and reflects the compact integrated design of the manual transaxle unit used across the 308 range, where the gearbox and final drive share a common fluid sump.
  • The fluid check interval across all three variants is set at 5,000 km under normal use conditions, meaning the transaxle level is inspected well before a full drain-and-fill is due.
  • The fluid change interval is specified at 15,000 km under normal use conditions for all three variants, placing the drain-and-fill cycle at three times the frequency of the check interval.
  • The 308 GT4 covered model years 1974-1980, while both the 308 GTB and 308 GTS share a 1975-1984 span, yet all three carry identical transaxle fluid capacity and service interval figures throughout their respective production periods.
  • The transaxle note applies uniformly to the GT4, GTB, and GTS, indicating that despite differences in body style and production timeline, the manual transaxle unit and its associated fluid service requirements remained consistent across the 308 family.

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