Updated specs are available.
Engine oil pressure at 3,000 rpm (NA8)
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Not yet checked against the factory manual for your car's year. It's verified in the 1994 Mazda MX-5 Miata Workshop Manual; later manuals may differ.
43–56 psi (295–392 kPa; 3.0–4.0 kgf/cm²) at 3,000 rpm295–392 kPa {3.0–4.0 kgf/cm², 43–56 psi} at 3,000 rpm
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Remove oil-pressure switch and fit pressure gauge in its installation hole. Warm engine to normal operating temperature and measure running pressure at the stated engine speed. This is a gauge inspection, not oil-pump relief-valve pressure. Upper printed psi bound is 56, not 66; visually confirmed against source.
Applies to
- NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.
- Verified in: 1994 Mazda MX-5 Miata Workshop Manual
Sources (1)
View 1 source citations
- 1994 Mazda MX-5 Miata Workshop ManualTier 1
Page D–4 (PDF p. 127) · Printed value & notes
Page D–4 (PDF p. 127)Printed: “Oil pressure: 295—392 kPa {3.0—4.0 kgf/cm², 43—56 psi}–3,000 rpm”