Updated specs are available.
5-speed manual transmission oil type and capacity (1999)
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Not yet checked against the factory manual for your car's year. It's verified in the 1999 Mazda MX-5 Miata Workshop Manual; later manuals may differ.
2.1 US qt2 L2 L2.1 US qt1.8 Imp qtManual transmission gear oil; API service GL-4 or GL-5; SAE 75W–90 (all season); SAE 80W–90 above 10°C (50°F)
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Check the oil level at the check plug hole, following the cited factory manual.
Applies to
- NB 1999 (BP-4W, 5MT)
- Verified in: 1999 Mazda MX-5 Miata Workshop Manual
Sources
- Page 05–11–12.1 US qt2 L2 L2.1 US qt1.8 Imp qtManual transmission gear oil; API service GL-4 or GL-5; SAE 75W–90 (all season); SAE 80W–90 above 10°C (50°F)Printed: “API service GL-4 or GL-5 SAE 75W–90 (All season) or SAE 80W–90 (Above 10 °C {50 °F}) 2.0 L {2.1 US qt, 1.8 Imp qt}”