Glas 1300 GT

Differential fluid capacity & service interval

Glas 1300 GT differential fluid capacity ranges from 0,8 to 1,3 liters. Service intervals include 500 km, 3000 km, and 6000 km. The data covers 6 configurations.

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

TypeSpecifications
  • 1300 GT (1965-1967)
  • Rear
  • Use: Normal
  • Capacity 1,3 liter
  • Change 6000 km
  • 1300 GT (1965-1967)
  • Rear
  • Use: Initial service
  • Capacity 1,3 liter
  • Change 500 km
  • 1300 GT (1965-1967)
  • Rear
  • Use: Second change only
  • Capacity 1,3 liter
  • Change 3000 km
  • 1300 GT (1964-1965)
  • Rear
  • Use: Normal
  • Capacity 0,8 liter
  • Change 6000 km
  • 1300 GT (1964-1965)
  • Rear
  • Use: Initial service
  • Capacity 0,8 liter
  • Change 500 km
  • 1300 GT (1964-1965)
  • Rear
  • Use: Second change only
  • Capacity 0,8 liter
  • Change 3000 km

Additional Notes

  • The Glas 1300 GT rear differential holds 0.8 liter in the 1964-1965 configuration and 1.3 liters in the 1965-1967 configuration, a difference of 0.5 liter between the two variants.
  • The 1.3-liter differential capacity of the 1965-1967 variant is notably larger relative to the earlier unit, which in differential service terms typically reflects a physically larger housing or gear assembly requiring more lubricant volume to maintain adequate fluid coverage across all internal components.
  • Both the 1964-1965 and 1965-1967 configurations share an identical normal-use change interval of 6000 km, meaning the shift in differential size between the two variants did not alter the standard service frequency.
  • The initial service interval for both configurations is set at 500 km, a very short interval used to flush out metal particles and manufacturing residues that accumulate during the break-in period of a new differential.
  • A second change interval of 3000 km applies to both configurations, positioned between the 500 km initial service and the 6000 km normal interval, serving as an intermediate flush before the differential transitions to its regular maintenance schedule.
  • The three-stage service sequence of 500 km, 3000 km, and then 6000 km recurring intervals applies uniformly across both the 1964-1965 and 1965-1967 rear differential specifications, regardless of the capacity difference between the two.

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