PGO T-Rex

Differential fluid capacity & service interval

PGO T-Rex differential fluid capacity ranges from 0,3 to 0,33 liters. Service intervals include 300 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
  • T-Rex 125 (2006-2008)
  • Rear
  • Use: Normal
  • Capacity 0,33 liter (Dry fill)
  • Capacity 0,3 liter (Service fill)
  • Change 6000 km
  • T-Rex 125 (2006-2008)
  • Rear
  • Use: Initial service
  • Capacity 0,33 liter (Dry fill)
  • Capacity 0,3 liter (Service fill)
  • Change 300 km
  • T-Rex 50 (2006- )
  • Rear
  • Use: Normal
  • Capacity 0,33 liter (Dry fill)
  • Filter capacity 0,3 liter (Service fill)
  • Change 6000 km
  • T-Rex 50 (2006- )
  • Rear
  • Use: Initial service
  • Capacity 0,33 liter (Dry fill)
  • Filter capacity 0,3 liter (Service fill)
  • Change 300 km
  • T-Rex 150 (2004-2008)
  • Rear
  • Use: Normal
  • Capacity 0,33 liter (Dry fill)
  • Capacity 0,3 liter (Service fill)
  • Change 6000 km
  • T-Rex 150 (2004-2008)
  • Rear
  • Use: Initial service
  • Capacity 0,33 liter (Dry fill)
  • Capacity 0,3 liter (Service fill)
  • Change 300 km

Additional Notes

  • The PGO T-Rex rear differential carries a dry fill capacity of 0.33 liter across the 50, 125, and 150 variants, a figure that applies when the unit is completely empty, such as after a rebuild or component replacement.
  • Service fill capacity is rated at 0.3 liter for all three variants, reflecting the smaller volume needed when residual fluid remains in the differential housing during a routine drain and refill.
  • The 0.03-liter difference between dry fill and service fill on the T-Rex 125 and T-Rex 150 is consistent with the typical volume of fluid that clings to internal surfaces and cannot be fully drained without disassembly.
  • Under normal use conditions, the rear differential fluid change interval is set at 6000 km for the T-Rex 125 (2006-2008), T-Rex 150 (2004-2008), and T-Rex 50 (2006- ).
  • An initial service interval of 300 km is specified for all three variants, tied directly to the same 0.3-liter service fill capacity. At 300 km, the fluid is changed to remove metal particles generated during the break-in period of new differential components.
  • The T-Rex 150 carries the earliest model year coverage among the three variants, with rear differential specifications beginning in 2004, while the 125 and 50 both start from 2006.
  • Capacity values are identical across the 50cc, 125cc, and 150cc engine configurations, indicating the rear differential housing is a shared unit regardless of engine displacement.

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