Showing specs for all NA & NB Miatas

Differential oil type and capacity (1999)

1.06 US qt1 L1 L1.06 US qt0.88 Imp qtDifferential gear oil; API GL-5; SAE 90 above −18°C (0°F); SAE 80 below −18°C (0°F)
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Applies to
  • NB 1999 (BP-4W)
  • Verified in: 1999 Mazda MX-5 Miata Workshop Manual
Sources
  • Page 03–50–1
    1.06 US qt1 L1 L1.06 US qt0.88 Imp qtDifferential gear oil; API GL-5; SAE 90 above −18°C (0°F); SAE 80 below −18°C (0°F)
    Printed: “API service GL-5 Above −18 °C {0 °F}: SAE 90 Below −18 °C {0 °F}: SAE 80 1.00 {1.06, 0.88}”