Audi A4, S4 Cabriolet, 8H / B6 (USA)

Transfer case fluid capacity & service interval

Audi A4, S4 Cabriolet, 8H / B6 (USA) transfer case fluid capacity is 0,55 liter. Service intervals include checks at 15000 miles/ 12 months and 20000 miles/ 12 months. The data covers 2 configurations.

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

TypeSpecifications
  • S4 Cabriolet (253 kW) (2003-2005)
  • From automatic
  • Use: Normal
  • Capacity 0,55 liter
  • Check 20000 miles/ 12 months
  • S4 Cabriolet (253 kW) (2003-2005)
  • From automatic
  • Use: First check only
  • Capacity 0,55 liter
  • Check 15000 miles/ 12 months

Additional Notes

  • The Audi A4, S4 Cabriolet 8H / B6 S4 Cabriolet (253 kW) carries a transfer case fluid capacity of 0.55 liter, which is a relatively small fill volume consistent with a compact transfer box unit rather than a larger drivetrain assembly.
  • The 0.55 liter figure applies specifically to the transfer box sourced from the automatic transmission configuration, meaning manual-equipped variants are not represented in these specifications.
  • Under normal use conditions, the transfer case fluid check interval is set at 20,000 miles or 12 months, whichever comes first.
  • A separate first check only interval of 15,000 miles or 12 months is specified for the same 0.55 liter transfer box, reflecting an earlier inspection point during the initial service period of the fluid.
  • The 5,000-mile difference between the first check only interval and the normal interval indicates the initial service period calls for an earlier inspection before the standard recurring schedule takes over.
  • Both the normal and first check only entries share the same 12-month time limit alongside their respective mileage thresholds, meaning whichever limit is reached first would trigger the service regardless of distance traveled.

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