ERF E8

Manual transmission fluid capacity & service interval

ERF E8 manual transmission fluid has a capacity range of 8 to 13 liters. Service intervals include a check at 16000 km and a change at 100000 km. The data covers 2 configurations.

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

TypeSpecifications
E 8.24 (1990-1993)
  • Use: Normal
  • Capacity 8 liter
  • Check 16000 km
  • Change 100000 km
  • Code: Eaton 6109 9/1
E 8.27 (1990-1993)
  • Use: Normal
  • Capacity 13 liter
  • Check 16000 km
  • Change 100000 km
  • Code: Eaton R 11609A 9/1

Additional Notes

  • The ERF E8 manual transmission fluid capacity varies notably between configurations. The E 8.24 carries 8 liters, while the E 8.27 requires 13 liters, a difference of 5 liters between the two variants produced across the 1990-1993 model years.
  • The 13-liter capacity of the E 8.27 is a substantial fill volume, consistent with larger or multi-section heavy-duty manual transmission assemblies where fluid must circulate across a greater internal volume to maintain lubrication and cooling.
  • Both the E 8.24 and E 8.27 share an identical service interval structure under normal use conditions, with a fluid level check scheduled at 16,000 km and a full fluid change at 100,000 km.
  • The 16,000 km check interval on both variants serves as an intermediate inspection point rather than a change event, allowing verification of fluid level and condition without requiring a full drain and refill at that stage.
  • A 100,000 km drain interval for a heavy commercial vehicle transmission reflects a normal-use operating assumption, meaning the interval applies when the vehicle is not subjected to conditions such as sustained high loads, extreme temperatures, or frequent stop-start cycles that would otherwise accelerate fluid degradation.

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