Showing specs for all NA & NB Miatas

Engine oil pressure at 3,000 rpm (NA6)

43–57 psi (294–392 kPa; 3.0–4.0 kg/cm²)–3,000 rpm294–392 kPa (3.0–4.0 kg/cm², 43–57 psi)–3,000 rpm

Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Warm the engine to normal operating temperature. Measure using the factory gauge at the oil-pressure sender opening; these are running pressure readings, not the oil-pump relief pressure.

Applies to
  • NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.
  • Verified in: 1990 Mazda MX-5 Miata Workshop Manual

Sources (1)

View 1 source citations
  • Page D–4 (PDF p. 121) · Printed value & notes
    Part no. 1193-10-89C
    Page D–4 (PDF p. 121)
    Printed: “294—392 kPa (3.0—4.0 kg/cm², 43—57 psi)—3,000 rpm”