Steyr S21

Differential fluid capacity & service interval

Steyr S21 uses differential fluid with a capacity range of 2,5 to 9,5 liters. Service intervals include checks at 20000 km and changes at 40000 km or 12 months. The data covers 11 configurations.

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

TypeSpecifications
  • 14S21 (1988-1996)
  • Rear
  • Use: Normal
  • Capacity 5 liter
  • Check 20000 km
  • Change 40000 km/ 12 months
  • 15S21 (1988-1996)
  • Rear
  • Use: Normal
  • Capacity 5 liter
  • Check 20000 km
  • Change 40000 km/ 12 months
  • 15S21 4x4 (1988-1996)
  • Front
  • Use: Normal
  • Capacity 2,5 liter
  • Check 20000 km
  • Change 40000 km/ 12 months
  • 15S21 4x4 (1988-1996)
  • Rear
  • Use: Normal
  • Capacity 5 liter
  • Check 20000 km
  • Change 40000 km/ 12 months
  • 16S21 (1988-1993)
  • Rear
  • Use: Normal
  • Capacity 5 liter
  • Check 20000 km
  • Change 40000 km/ 12 months
  • 17S21 (1988-1993)
  • Rear
  • Use: Normal
  • Capacity 5 liter
  • Check 20000 km
  • Change 40000 km/ 12 months
  • 17S21 (UK only !) (1988-1993)
  • Rear
  • Use: Normal
  • Capacity 8 liter
  • Check 20000 km
  • Change 40000 km/ 12 months
  • 12S21 4x4 (1987-1988)
  • Front
  • Use: Normal
  • Capacity 2,5 liter
  • Check 20000 km
  • Change 40000 km/ 12 months
  • 12S21 4x4 (1987-1988)
  • Rear
  • Use: Normal
  • Capacity 9,5 liter
  • Check 20000 km
  • Change 40000 km/ 12 months
  • 13S21 4x4 (1987-1988)
  • Front
  • Use: Normal
  • Capacity 2,5 liter
  • Check 20000 km
  • Change 40000 km/ 12 months
  • 13S21 4x4 (1987-1988)
  • Rear
  • Use: Normal
  • Capacity 9,5 liter
  • Check 20000 km
  • Change 40000 km/ 12 months

Other Systems