Mercury Cougar

Automatic transmission fluid capacity & service interval

Mercury Cougar automatic transmission fluid capacity ranges from 9,6 to 13,1 liters. Service intervals include checks at 15000 miles and changes at 21000 or 30000 miles. The data covers 8 configurations.

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

TypeSpecifications
Cougar 2.0 16V (1998-2002)
  • Use: Normal
  • Capacity 9,6 liter
  • Check 15000 miles
  • Change 30000 miles
Cougar 2.5 V6 24V (1998-2002)
  • Use: Normal
  • Capacity 9,6 liter
  • Check 15000 miles
  • Change 30000 miles
Cougar 3.8 V6 (1996-1997)
  • Use: Normal
  • Capacity 13,1 liter
  • Change 30000 miles
  • Code: 4R70W 4/1
Cougar 3.8 V6 (1996-1997)
  • Use: Severe
  • Capacity 13,1 liter
  • Change 21000 miles
  • Code: 4R70W 4/1
Cougar 4.6 V8 (1994-1997)
  • Use: Normal
  • Capacity 13,1 liter
  • Change 30000 miles
  • Code: 4R70W 4/1
Cougar 4.6 V8 (1994-1997)
  • Use: Severe
  • Capacity 13,1 liter
  • Change 21000 miles
  • Code: 4R70W 4/1
Cougar 4.9 V8 (1991-1993)
  • Use: Normal
  • Capacity 11,7 liter
Cougar 3.8 V6 (1988-1995)
  • Use: Normal
  • Capacity 11,7 liter

Additional Notes

  • The Mercury Cougar 2.0 16V and 2.5 V6 24V, both covering 1998-2002, share an identical automatic transaxle capacity of 9.6 liters. The use of the term "transaxle" distinguishes these configurations from the earlier rear-wheel-drive models, reflecting a combined transmission and differential assembly typical of front-wheel-drive platforms.
  • The 9.6-liter transaxle capacity on the 1998-2002 four-cylinder and V6 variants carries a check interval of 15,000 miles and a change interval of 30,000 miles under normal use conditions. The presence of both a check and a change interval in the same specification row indicates a two-stage fluid maintenance schedule.
  • The 3.8 V6 in the 1988-1995 range carries a transmission capacity of 11.7 liters with no service interval listed in the specifications. The 4.9 V8 covering 1991-1993 shares the same 11.7-liter figure, also without an interval entry.
  • The 3.8 V6 for 1996-1997 shows a capacity increase to 13.1 liters compared to the 11.7-liter figure for the same engine in 1988-1995. This difference points to a change in the automatic transmission unit used across those model year groups.
  • The Cougar 3.8 V6 (1996-1997) carries a 30,000-mile change interval under normal use and a 21,000-mile interval under severe use, both at the same 13.1-liter capacity. The shorter severe-use interval reflects the greater thermal and mechanical stress placed on transmission fluid under demanding operating conditions.
  • The 4.6 V8 covering 1994-1997 matches the 3.8 V6 (1996-1997) exactly in both capacity and service intervals, with 13.1 liters, a 30,000-mile normal change interval, and a 21,000-mile severe change interval. Despite the difference in displacement, the shared capacity value suggests both engines were paired with the same automatic transmission assembly during that period.
  • A capacity of 13.1 liters, as seen in the 3.8 V6 (1996-1997) and 4.6 V8 (1994-1997) specifications, represents a total system fill figure. Values at this level typically account for fluid held in the torque converter, valve body, and transmission pan together, rather than a partial drain-and-fill service quantity.

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