Audi A4, S4, 8E / B6 (USA)

Transfer case fluid capacity & service interval

Audi A4, S4, 8E / B6 (USA) transfer case fluid capacity ranges from 0,55 to 0,8 liters. Service intervals include checks at 15000 miles or 12 months and 20000 miles or 12 months. The data covers 4 configurations.

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

TypeSpecifications
  • S4 4.2 quattro (253 kW) (2003-2005)
  • From automatic
  • Use: Normal
  • Capacity 0,55 liter
  • Check 20000 miles/ 12 months
  • S4 4.2 quattro (253 kW) (2003-2005)
  • From automatic
  • Use: First check only
  • Capacity 0,55 liter
  • Check 15000 miles/ 12 months
A4 3.0 5V quattro (162 kW) (2001-2005)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 20000 miles/ 12 months
A4 3.0 5V quattro (162 kW) (2001-2005)
  • Use: First check only
  • Capacity 0,8 liter
  • Check 15000 miles/ 12 months

Additional Notes

  • The Audi A4 3.0 5V quattro transfer case holds 0.8 liter of fluid, a figure that reflects a service fill level rather than a full overhaul or dry-fill capacity.
  • On the A4 3.0 5V quattro, the first check only interval is set at 15,000 miles or 12 months, which is an earlier inspection point than the 20,000-mile normal use interval that follows in subsequent service cycles.
  • The S4 4.2 quattro transfer case, specified for units sourced from an automatic transmission, carries a notably smaller capacity of 0.55 liter compared to the 0.8 liter figure associated with the A4 3.0 5V quattro.
  • The S4 4.2 quattro transfer case shares the same interval structure as the A4 3.0 5V quattro, with a first check only interval at 15,000 miles or 12 months and a normal use interval at 20,000 miles or 12 months.
  • Both the A4 3.0 5V quattro and the S4 4.2 quattro transfer case specifications apply to the 2001-2005 and 2003-2005 model year ranges respectively, meaning the S4 entries cover a shorter span within the broader B6 generation window.

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