Showing specs for all NA & NB Miatas

Fluids & capacities

Select your car above to filter these cited factory specifications. Open a spec for its full source and applicability details.

Initial coverage is limited to the reviewed 1990, 1994 and 1999 manuals. Other years, coolant mixture/type, A/C refrigerant and compressor oil still need review. Missing entries are gaps in this database.

Dry-engine, oil-pan and filter capacities are separate from an oil change. An automatic transmission’s published capacity is not a drain-and-fill amount unless the manual says so. Follow the manual’s level-check procedure. Converted values are marked ≈; US and Imperial quarts are different.

Brakes

Brake fluid type (1990)
NA 1990 (B6)
Factory manualBrake fluid; SAE J1703 or FMVSS 116, DOT-3
  • 1990 Mazda MX-5 Miata Workshop Manual — Page P–3Printed: “SAE J1703 or FMVSS 116, DOT-3”
Brake fluid type (1994)
NA 1994 (BP)
Factory manualBrake fluid; FMVSS 116: DOT–3
  • 1994 Mazda MX-5 Miata Workshop Manual — Page P–4Printed: “FMVSS 116: DOT–3”
Brake fluid type (1999)
NB 1999 (BP-4W)
Factory manualBrake fluid; SAE J1703 or FMVSS 116 DOT3
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 04–50–1Printed: “SAE J1703 or FMVSS 116 DOT3”

Steering

Power steering fluid type and capacity (1990)
NA 1990 (B6) — Only cars equipped with power steering.
Factory manual0.85 US qt0.8 L0.8 L0.85 US qt0.7 Imp qtPower steering fluid; ATF DEXRON II or M-III
  • 1990 Mazda MX-5 Miata Workshop Manual — Page N–4Printed: “ATF DEXRON II or M-III 0.8 (0.85, 0.70)”
Power steering fluid type and capacity (1994)
NA 1994 (BP) — Only cars equipped with power steering.
Factory manual0.85 US qt0.8 L0.8 L0.85 US qt0.7 Imp qtPower steering fluid; ATF Dexron®II or M-III
  • 1994 Mazda MX-5 Miata Workshop Manual — Page N–4Printed: “ATF Dexron®II or M-III 0.8 {0.85, 0.70}”
Power steering fluid type and capacity (1999)
NB 1999 (BP-4W, 5MT) — Only cars equipped with power steering.
Factory manual0.84 US qt0.79 L0.79 L0.84 US qt0.7 Imp qtPower steering fluid; ATF M-III or equivalent (e.g. Dexron®II)
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 06–50–1Printed: “ATF M-III or equivalent (e.g. Dexron®II) 0.79 {0.84, 0.70} [MT]”
Power steering fluid type and capacity (1999)
NB 1999 (BP-4W, 4AT) — Only cars equipped with power steering.
Factory manual0.72 US qt0.68 L0.68 L0.72 US qt0.6 Imp qtPower steering fluid; ATF M-III or equivalent (e.g. Dexron®II)
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 06–50–1Printed: “ATF M-III or equivalent (e.g. Dexron®II) 0.68 {0.72, 0.60} [AT]”

Lubrication

Engine oil — total (dry engine) (1990)
NA 1990 (B6)
Factory manual3.8 US qt3.6 L3.6 L3.8 US qt3.2 Imp qt
Notes
This is the named component capacity, not an inferred oil-change amount.
  • 1990 Mazda MX-5 Miata Workshop Manual — Page D–3Printed: “3.6 (3.8, 3.2)”
Engine oil — oil pan capacity (1990)
NA 1990 (B6)
Factory manual3.4 US qt3.2 L3.2 L3.4 US qt2.8 Imp qt
Notes
This is the named component capacity, not an inferred oil-change amount.
  • 1990 Mazda MX-5 Miata Workshop Manual — Page D–3Printed: “3.2 (3.4, 2.8)”
Engine oil — oil filter capacity (1990)
NA 1990 (B6)
Factory manual0.18 US qt0.17 L0.17 L0.18 US qt0.15 Imp qt
Notes
This is the named component capacity, not an inferred oil-change amount.
  • 1990 Mazda MX-5 Miata Workshop Manual — Page D–3Printed: “0.17 (0.18, 0.15)”
Engine oil — total (dry engine) (1994)
NA 1994 (BP)
Factory manual4.2 US qt4 L4 L4.2 US qt3.5 Imp qt
  • 1994 Mazda MX-5 Miata Workshop Manual — Page D–3Printed: “4.0 {4.2, 3.5}”
Engine oil — replacement without filter (1994)
NA 1994 (BP)
Factory manual3.8 US qt3.6 L3.6 L3.8 US qt3.2 Imp qt
  • 1994 Mazda MX-5 Miata Workshop Manual — Page D–3Printed: “3.6 {3.8, 3.2}”
Engine oil — oil and filter replacement (1994)
NA 1994 (BP)
Factory manual4 US qt3.75 L3.75 L4 US qt3.3 Imp qt
  • 1994 Mazda MX-5 Miata Workshop Manual — Page D–3Printed: “3.75 {4.0, 3.3}”
Engine oil — total (dry engine) (1999)
NB 1999 (BP-4W)
Factory manual4.2 US qt4 L4 L4.2 US qt3.5 Imp qt
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–50–1Printed: “4.0 {4.2, 3.5}”
Engine oil — replacement without filter (1999)
NB 1999 (BP-4W)
Factory manual3.8 US qt3.6 L3.6 L3.8 US qt3.2 Imp qt
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–50–1Printed: “3.6 {3.8, 3.2}”
Engine oil — oil and filter replacement (1999)
NB 1999 (BP-4W)
Factory manual4 US qt3.8 L3.8 L4 US qt3.3 Imp qt
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–50–1Printed: “3.8 {4.0, 3.3}”
Engine oil type (1990)
NA 1990 (B6)
Factory manualEngine oil; API service SF or SG; Choose viscosity using the temperature chart in the cited factory manual.
  • 1990 Mazda MX-5 Miata Workshop Manual — Page D–3Printed: “API service SF or SG”
Engine oil type (1994)
NA 1994 (BP)
Factory manualEngine oil; API service SG, SH (ECII); ILSAC; SAE 10W–30 above −25°C (−13°F); SAE 5W–30 below 0°C (32°F)
  • 1994 Mazda MX-5 Miata Workshop Manual — Page D–3Printed: “API service SG, SH (ECII) ILSAC Above −25°C {−13°F} SAE 10W–30 Below 0°C {32°F} SAE 5W–30”
Engine oil type (1999)
NB 1999 (BP-4W)
Factory manualEngine oil; API Service SG (Energy Conserving II), SH (Energy Conserving II) or ILSAC (GF-I); SJ or ILSAC (GF-II); SAE 10W–30 above −25°C (−13°F); SAE 5W–30 below 0°C (32°F)
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–50–2Printed: “API Service SG (Energy Conserving II), SH (Energy Conserving II) or ILSAC (GF-I) SJ or ILSAC (GF-II) Above −25 °C {−13 °F} SAE 10W–30 Below 0 °C {32 °F} SAE 5W–30”

Cooling

Cooling system capacity (1990)
NA 1990 (B6)
Factory manual6.3 US qt6 L6 L6.3 US qt5.3 Imp qt
Notes
Published cooling-system capacity; coolant type and mixture are not yet included in this database.
  • 1990 Mazda MX-5 Miata Workshop Manual — Page E–3Printed: “6.0 (6.3, 5.3)”
Cooling system capacity (1994)
NA 1994 (BP)
Factory manual6.3 US qt6 L6 L6.3 US qt5.3 Imp qt
Notes
Published cooling-system capacity; coolant type and mixture are not yet included in this database.
  • 1994 Mazda MX-5 Miata Workshop Manual — Page E–3Printed: “6.0 {6.3, 5.3}”
Cooling system capacity (1999)
NB 1999 (BP-4W)
Factory manual6.3 US qt6 L6 L6.3 US qt5.3 Imp qt
Notes
Published cooling-system capacity; coolant type and mixture are not yet included in this database.
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 01–50–2Printed: “6.0 {6.3, 5.3}”

Clutch

Clutch hydraulic fluid type (1990)
NA 1990 (B6, 5MT)
Factory manualClutch fluid; SAE J1703 OR FMVSS116 DOT-3
  • 1990 Mazda MX-5 Miata Workshop Manual — Page H–2Printed: “SAE J1703 OR FMVSS116 DOT-3”
Clutch hydraulic fluid type (1994)
NA 1994 (BP, 5MT)
Factory manualClutch fluid; FMVSS116 DOT–3
  • 1994 Mazda MX-5 Miata Workshop Manual — Page H–3Printed: “FMVSS116 DOT–3”
Clutch hydraulic fluid type (1999)
NB 1999 (BP-4W, 5MT)
Factory manualClutch fluid; SAE J1703, FMVSS116 DOT-3
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 05–50–1Printed: “SAE J1703, FMVSS116 DOT-3”

Transmission

5-speed manual transmission oil type (1990)
NA 1990 (B6, 5MT)
Factory manualManual transmission gear oil; API service GL-4 or GL-5; SAE 75W–90 (all season); SAE 80W–90 above 10°C (50°F)
Notes
Add oil through the check plug until the level reaches the bottom of the check plug hole.
  • 1990 Mazda MX-5 Miata Workshop Manual — Page J–8Printed: “API service GL-4 or GL-5 All-season: SAE 75W-90 Above 10°C (50°F): SAE 80W-90”
5-speed manual transmission oil type and capacity (1994)
NA 1994 (BP, 5MT)
Factory manual2.1 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)
Notes
Check the oil level at the check plug hole, following the cited factory manual.
  • 1994 Mazda MX-5 Miata Workshop Manual — Page J–8Printed: “API service GL–4 or GL–5 All-season: SAE 75W–90 Above 10°C {50°F}: SAE 80W–90 Capacity: 2.0 L {2.1 US qt, 1.8 Imp qt}”
5-speed manual transmission oil type and capacity (1999)
NB 1999 (BP-4W, 5MT)
Factory manual2.1 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)
Notes
Check the oil level at the check plug hole, following the cited factory manual.
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 05–11–1Printed: “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}”
Automatic transmission fluid — total capacity (1994)
NA 1994 (BP, 4AT)
Factory manual7.7 US qt7.3 L7.3 L7.7 US qt6.4 Imp qtAutomatic transmission fluid; Dexron®II or M-III
Notes
Total capacity; do not use this as a drain-and-fill amount.
  • 1994 Mazda MX-5 Miata Workshop Manual — Page K–3Printed: “Dexron®II or M-III Total 7.3 {7.7, 6.4}”
Automatic transmission fluid — oil pan capacity (1994)
NA 1994 (BP, 4AT)
Factory manual4.2 US qt4 L4 L4.2 US qt3.5 Imp qtAutomatic transmission fluid; Dexron®II or M-III
Notes
Oil pan capacity as printed; the actual service refill requires the manual’s level check.
  • 1994 Mazda MX-5 Miata Workshop Manual — Page K–3Printed: “Dexron®II or M-III Oil pan 4.0 {4.2, 3.5}”
Automatic transmission fluid — published capacity (1999)
NB 1999 (BP-4W, 4AT)
Factory manual7.1 US qt6.7 L6.7 L7.1 US qt5.9 Imp qtAutomatic transmission fluid; M-III or equivalent (e.g. Dexron®II)
Notes
The cited table does not label this as dry or drain-and-fill capacity. Do not assume a service refill amount.
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 05–50–1Printed: “M-III or equivalent (e.g. Dexron®II) 6.7 {7.1, 5.9}”

Driveshaft & Differential

Differential oil type and capacity (1990)
NA 1990 (B6)
Factory manual0.69 US qt0.65 L0.65 L0.69 US qt0.57 Imp qtDifferential gear oil; API GL-5; SAE 90 above −18°C (0°F); SAE 80W below −18°C (0°F)
Notes
Add the specified oil through the filler plug until the level reaches the bottom of the plug hole.
  • 1990 Mazda MX-5 Miata Workshop Manual — Page M–24Printed: “Above −18°C (0°F): API GL-5, SAE 90 Below −18°C (0°F): API GL-5, SAE 80W Capacity: 0.65 liter (0.69 US qt, 0.57 Imp qt)”
Differential oil type and capacity (1994)
NA 1994 (BP)
Factory manual1.06 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)
Notes
Add the specified oil through the filler plug until the level reaches the bottom of the plug hole.
  • 1994 Mazda MX-5 Miata Workshop Manual — Page M–25Printed: “Above −18°C {0°F}: API GL–5, SAE 90 Below −18°C {0°F}: API GL–5, SAE 80 Capacity: 1.00 L {1.06 US qt, 0.88 Imp qt}”
Differential oil type and capacity (1999)
NB 1999 (BP-4W)
Factory manual1.06 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)
  • 1999 Mazda MX-5 Miata Workshop Manual — Page 03–50–1Printed: “API service GL-5 Above −18 °C {0 °F}: SAE 90 Below −18 °C {0 °F}: SAE 80 1.00 {1.06, 0.88}”