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

Automatic transmission fluid capacity & service interval

Jeep Wrangler / CJ-7 / CJ-8, YJ (USA / CAN) automatic transmission fluid capacity ranges from 1,7 to 3,8 liters. The data covers 8 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 3,8 liter
  • Code: 3/1
Wrangler 2.5 (USA) (1994-1997)
  • Use: Normal
  • Capacity 1,7 liter
  • Code: Aisin Warner 4/1
Wrangler 4.0 (USA) (1994-1997)
  • Use: Normal
  • Capacity 3,8 liter
  • Code: 3/1
Wrangler 4.0 (USA) (1994-1997)
  • Use: Normal
  • Capacity 1,7 liter
  • Code: Aisin Warner 4/1
Wrangler 2.5 (USA) (1987-1993)
  • Use: Normal
  • Capacity 3,8 liter
  • Code: 3/1
Wrangler 2.5 (USA) (1987-1993)
  • Use: Normal
  • Capacity 3,8 liter
  • Code: Aisin Warner 3/1
Wrangler 4.2 (USA) (1987-1993)
  • Use: Normal
  • Capacity 3,8 liter
  • Code: 3/1
Wrangler 4.2 (USA) (1987-1993)
  • Use: Normal
  • Capacity 3,8 liter
  • Code: Aisin Warner 4/1

Additional Notes

  • The Jeep Wrangler automatic transmission specifications cover two distinct capacity figures: 3.8 liters and 1.7 liters. A 3.8-liter figure typically represents a total or overhaul fill, accounting for fluid held throughout the entire transmission assembly including the torque converter, while a 1.7-liter figure represents a service or pan-drop fill, which only replaces the fluid drained when the pan is removed.
  • The 2.5-liter engine in the 1987-1993 model years carries a single listed capacity of 3.8 liters under normal use conditions, with no secondary service fill figure present for that generation.
  • For the 2.5-liter engine in the 1994-1997 model years, both the 3.8-liter and 1.7-liter capacities are listed under normal use conditions, reflecting the distinction between a full overhaul fill and a routine pan-drop service fill within the same configuration.
  • The 4.0-liter engine in the 1994-1997 model years shares the same dual-capacity structure as the 2.5-liter from the same period, with 3.8 liters for a full fill and 1.7 liters for a service fill, both under normal use conditions.
  • The 4.2-liter engine, available in the 1987-1993 model years, lists only the 3.8-liter capacity under normal use conditions, mirroring the single-figure structure of the 2.5-liter from the same generation rather than the dual-figure format introduced in the 1994-1997 specifications.
  • Across all three engine variants in the 1987-1993 generation — the 2.5-liter and 4.2-liter — the automatic transmission capacity is uniformly listed at 3.8 liters, indicating no differentiation in fluid volume between the four-cylinder and six-cylinder configurations of that era.

Other Systems