Audi A4, S4, 8D / B5 (USA)

Transfer case fluid capacity & service interval

Audi A4, S4, 8D / B5 (USA) transfer case fluid capacity ranges from 0,7 to 0,8 liters. Service intervals include checks at 10000 miles or 12 months and 15000 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 2.7 Bi-turbo V6 quattro (187 kW) (1999-2001)
  • Use: Normal
  • Capacity 0,8 liter (Initial fill)
  • Capacity 0,7 liter (Refill)
  • Check 15000 miles/ 12 months
  • Code: 01V
A4 1.8 T 5V quattro (110 kW) (1997-2001)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 10000 miles/ 12 months
  • Code: 01V
A4 2.8 V6 quattro (142 kW) (1997-2001)
  • Use: Normal
  • Capacity 0,8 liter (Initial fill)
  • Capacity 0,7 liter (Refill)
  • Check 15000 miles/ 12 months
  • Code: 01V
A4 2.8 V6 quattro (128 kW) (1996-1997)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 15000 miles/ 12 months
  • Code: 01V

Additional Notes

  • Across all four configurations of the Audi A4 and S4 8D / B5 (USA), the transfer case initial fill capacity is 0.8 liter, a figure consistent with the compact Torsen-based center differential units used in quattro drivetrains of that generation.
  • The A4 2.8 V6 quattro (142 kW) and the S4 2.7 Bi-turbo V6 quattro both carry a distinction between initial fill at 0.8 liter and refill at 0.7 liter, meaning a routine service top-up or drain-and-fill returns slightly less fluid than a first-time assembly fill.
  • The A4 1.8 T 5V quattro and the A4 2.8 V6 quattro (128 kW) list only a single capacity figure of 0.8 liter without a separate refill value, indicating no differentiation between initial and subsequent service quantities in those specifications.
  • The A4 1.8 T 5V quattro, covering model years 1997-2001, carries a check interval of 10,000 miles or 12 months under normal use conditions, which is a shorter mileage interval than the 15,000-mile interval assigned to the V6 and S4 configurations.
  • The A4 2.8 V6 quattro in both its 128 kW (1996-1997) and 142 kW (1997-2001) forms, along with the S4 2.7 Bi-turbo V6 quattro (1999-2001), share a check interval of 15,000 miles or 12 months under normal use, placing the mileage threshold 50 percent higher than the 1.8 T specification.
  • All four configurations share the same 12-month time-based check interval regardless of mileage, meaning calendar time functions as an independent service trigger alongside the mileage figure in every case listed.
  • The S4 2.7 Bi-turbo V6 quattro, despite producing 187 kW against the 142 kW of the top A4 V6, carries an identical transfer case capacity and check interval to that A4 variant, reflecting a shared mechanical architecture at the transfer case level.

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