Jeep Wrangler / CJ-7 / CJ-8, YJ (USA / CAN)

Transfer case fluid capacity & service interval

Jeep Wrangler / CJ-7 / CJ-8, YJ (USA / CAN) models utilize transfer case fluid with a capacity range of 1 to 2,1 liters. The data covers 7 configurations.

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

TypeSpecifications
Wrangler 2.5 (USA) (1994-1997)
  • Use: Normal
  • Capacity 1,5 liter
  • Wrangler 2.5 (USA) (1994-1997)
  • Automatic
  • Use: Normal
  • Capacity 1 liter
Wrangler 4.0 (USA) (1994-1997)
  • Use: Normal
  • Capacity 1,5 liter
  • Wrangler 4.0 (USA) (1994-1997)
  • Automatic
  • Use: Normal
  • Capacity 1 liter
Wrangler 2.5 (USA) (1987-1993)
  • Use: Normal
  • Capacity 1,5 liter
Wrangler 4.2 (USA) (1987-1993)
  • Use: Normal
  • Capacity 1,5 liter
CJ-7 / CJ-8 (USA) (1985-1987)
  • Use: Normal
  • Capacity 2,1 liter

Additional Notes

  • The Jeep CJ-7 / CJ-8 transfer case carries a notably larger fluid capacity of 2.1 liters compared to all Wrangler configurations listed, which reflects the physically larger transfer case unit fitted to the CJ series.
  • Across the 1987-1993 Wrangler lineup, both the 2.5-liter and 4.2-liter engines share an identical transfer case fluid capacity of 1.5 liters, indicating a common transfer case unit regardless of engine displacement during that period.
  • The 1994-1997 Wrangler 2.5 with a manual transmission retains the 1.5-liter transfer case capacity carried over from the 1987-1993 generation, while the automatic transmission variant for the same years requires only 1.0 liter.
  • The 1994-1997 Wrangler 4.0 follows the same capacity split seen in the 2.5-liter variant: 1.5 liters for the manual transmission application and 1.0 liter for the automatic transmission application.
  • The reduced 1.0-liter capacity on automatic transmission Wrangler models in 1994-1997 reflects a different transfer case design paired with the automatic gearbox rather than a smaller unit overall, as the fluid volume requirements differ between the two drivetrain configurations.
  • All specifications across the 1985-1997 range are listed under normal use conditions, meaning the stated capacities apply to standard operating environments without a separate severe-duty interval or fill volume noted for any configuration.

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