Jeep Wrangler / CJ-7 / CJ-8, YJ (EU)

Automatic transmission fluid capacity & service interval

Jeep Wrangler / CJ-7 / CJ-8, YJ (EU) automatic transmission fluid capacity ranges from 1,7 to 3,8 liters. Service intervals include changes at 20000 km or 48000 km/24 months, and checks at 12000 km/6 months. The data covers 12 configurations.

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

TypeSpecifications
Wrangler 2.5 (1994-1997)
  • Use: Normal
  • Capacity 3,8 liter
  • Check 12000 km/ 6 months
  • Change 48000 km/ 24 months
  • Code: 3/1
Wrangler 2.5 (1994-1997)
  • Use: Normal
  • Capacity 1,7 liter
  • Check 12000 km/ 6 months
  • Change 48000 km/ 24 months
  • Code: Aisin Warner 4/1
Wrangler 4.0 (1994-1997)
  • Use: Normal
  • Capacity 3,8 liter
  • Check 12000 km/ 6 months
  • Change 48000 km/ 24 months
  • Code: 3/1
Wrangler 4.0 (1994-1997)
  • Use: Normal
  • Capacity 1,7 liter
  • Check 12000 km/ 6 months
  • Change 48000 km/ 24 months
  • Code: Aisin Warner 4/1
Wrangler 2.5 (1987-1993)
  • Use: Normal
  • Capacity 3,8 liter
  • Change 48000 km/ 24 months
  • Code: 3/1
Wrangler 2.5 (1987-1993)
  • Use: Severe
  • Capacity 3,8 liter
  • Change 20000 km
  • Code: 3/1
Wrangler 2.5 (1987-1993)
  • Use: Normal
  • Capacity 3,8 liter
  • Change 48000 km/ 24 months
  • Code: Aisin Warner 3/1
Wrangler 2.5 (1987-1993)
  • Use: Severe
  • Capacity 3,8 liter
  • Change 20000 km
  • Code: Aisin Warner 3/1
Wrangler 4.2 (1987-1993)
  • Use: Normal
  • Capacity 3,8 liter
  • Change 48000 km/ 24 months
  • Code: 3/1
Wrangler 4.2 (1987-1993)
  • Use: Severe
  • Capacity 3,8 liter
  • Change 20000 km
  • Code: 3/1
Wrangler 4.2 (1987-1993)
  • Use: Normal
  • Capacity 3,8 liter
  • Change 48000 km/ 24 months
  • Code: Aisin Warner 4/1
Wrangler 4.2 (1987-1993)
  • Use: Severe
  • Capacity 3,8 liter
  • Change 20000 km
  • Code: Aisin Warner 4/1

Additional Notes

  • Across all engine variants in the 1987-1993 range, the Jeep Wrangler automatic transmission fluid capacity is listed at 3.8 liters, a figure that applies equally to the 2.5, 4.2, and both the normal and severe use conditions.
  • The 3.8-liter figure represents a service fill capacity, meaning the volume of fluid required during a routine drain-and-refill service rather than a full overhaul, which would typically require a higher total system volume.
  • For the 1987-1993 2.5 and 4.2 engine variants, the normal use change interval is set at 48,000 km or 24 months, whichever comes first, combining a distance threshold with a fixed time limit.
  • Under severe use conditions, the 1987-1993 2.5 and 4.2 variants carry a reduced change interval of 20,000 km with no accompanying time-based limit, reflecting the increased thermal and mechanical stress associated with severe operating conditions.
  • The 1994-1997 Wrangler 2.5 specifications introduce two distinct capacity values for the automatic transmission: 3.8 liters and 1.7 liters, indicating separate fill points or components within the transmission system rather than a single unified capacity.
  • The same dual-capacity structure of 3.8 liters and 1.7 liters appears in the 1994-1997 Wrangler 4.0 specifications, suggesting a shared transmission architecture between the 2.5 and 4.0 engine configurations in that model year range.
  • Starting with the 1994-1997 variants, a fluid check interval of 12,000 km or 6 months is added alongside the 48,000 km / 24-month change interval, a combination not present in the 1987-1993 specifications.
  • The 1994-1997 specifications carry only normal use conditions, whereas the 1987-1993 entries include both normal and severe use designations with differing change intervals tied to each.

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