Torpedo All models

Differential fluid capacity & service interval

Torpedo All models use differential fluid with a capacity range of 3,6 to 12 liters. Service intervals include checking at 10 hours and changing at 1000 hours or 12 months. The data covers 4 configurations.

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

TypeSpecifications
  • RX 100 (1986-1990)
  • Front
  • Use: Normal
  • Capacity 12 liter
  • Check 10 hours
  • Change 1000 hours
  • Code: (4x4)
  • RX 120 (1986-1990)
  • Front
  • Use: Normal
  • Capacity 12 liter
  • Check 10 hours
  • Change 1000 hours
  • Code: (4x4)
  • TX 55A (1986-1990)
  • Front
  • Use: Normal
  • Capacity 3,6 liter
  • Change 1000 hours/ 12 months
  • Code: (4x4)
  • TX 75A (1986-1990)
  • Front
  • Use: Normal
  • Capacity 7,5 liter
  • Check 10 hours
  • Change 1000 hours/ 12 months
  • Code: (4x4)

Additional Notes

  • The Torpedo RX 100 and RX 120 share an identical front differential fluid capacity of 12 liters, which is a notably large fill volume consistent with heavy-duty axle housings found in high-load machinery.
  • Both the RX 100 and RX 120 specify a check interval of every 10 hours under normal use conditions, paired with a change interval of 1000 hours, indicating a wide service window between fluid replacements relative to how frequently the level is monitored.
  • The TX 55A carries a front differential fluid capacity of 3.6 liters, the smallest among the four configurations listed for 1986-1990, reflecting a physically smaller differential assembly compared to the RX-series units.
  • The TX 75A front differential holds 7.5 liters, placing it between the TX 55A and the RX-series in terms of fluid volume, and also includes a 10-hour check interval alongside the 1000-hour change interval.
  • The TX 55A is the only configuration in the 1986-1990 range that does not specify a periodic fluid level check interval, listing only a change interval of 1000 hours or 12 months under normal use conditions.
  • Both TX-series models add a 12-month time-based threshold to the 1000-hour change interval, meaning whichever limit is reached first under normal use conditions would govern the service event, whereas the RX-series specifies only the 1000-hour interval without a calendar-based counterpart.

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