# Six-speed transmission oil specification & capacity (2003)

Canonical URL: https://miatatorque.com/spec/six-speed-transmission-oil-capacity-2003/

Applicability: NB 2003 (BP-Z3, 6MT)

Confidence: fsm

1.7–1.8 L / 1.79–1.9 US qt / 1.49–1.58 Imp qt · Manual transmission gear oil; API service GL 4 or GL 5; SAE 75W-90 (All season) or SAE 80W-90 (Above 10°C {50°F})

Always confirm against your factory manual. Match every restriction and follow all stages and procedure notes. Disputed claims must not be automatically resolved. The complete record below preserves every printed unit, source claim and procedure.

```json
{
  "id": "six-speed-transmission-oil-capacity-2003",
  "name": "Six-speed transmission oil specification & capacity (2003)",
  "aliases": [
    "Six-speed transmission oil specification & capacity",
    "6-speed manual transmission oil type and capacity"
  ],
  "applies_to": [
    {
      "gen": "NB",
      "years": [
        2003,
        2003
      ],
      "engines": [
        "BP-Z3"
      ],
      "trans": [
        "6MT"
      ]
    }
  ],
  "kind": "capacity",
  "capacity": {
    "l": [
      1.7,
      1.8
    ],
    "qt_us": [
      1.79,
      1.9
    ],
    "qt_imp": [
      1.49,
      1.58
    ]
  },
  "fluid": {
    "type": "Manual transmission gear oil",
    "viscosity": "SAE 75W-90 (All season) or SAE 80W-90 (Above 10°C {50°F})",
    "standard": "API service GL 4 or GL 5"
  },
  "procedure": {
    "notes": "Approximate quantity. Verify the level at the brim of the filler hole."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-2003",
      "page": "PDF p. 1381",
      "as_printed": "Grade: API service GL 4 or GL 5\nViscosity: SAE 75W-90 (All season) or SAE 80W-90 (Above 10°C {50°F})\nCapacity (approximate quantity): 1.70—1.80 L {1.79—1.90 US qt, 1.49—1.58 lmp qt}",
      "capacity": {
        "l": [
          1.7,
          1.8
        ],
        "qt_us": [
          1.79,
          1.9
        ],
        "qt_imp": [
          1.49,
          1.58
        ]
      },
      "fluid": {
        "type": "Manual transmission gear oil",
        "viscosity": "SAE 75W-90 (All season) or SAE 80W-90 (Above 10°C {50°F})",
        "standard": "API service GL 4 or GL 5"
      },
      "document": {
        "id": "fsm-2003",
        "tier": 1,
        "title": "2003 Mazda MX-5 Miata Workshop Manual (electronic manual capture)",
        "covers": [
          {
            "gen": "NB",
            "years": [
              2003,
              2003
            ],
            "engines": [
              "BP-Z3"
            ]
          }
        ],
        "note": "Normally aspirated BP procedures audited; turbo procedures are covered separately."
      }
    },
    {
      "source": "owners-2003",
      "page": "10-5",
      "as_printed": "6-Speed transmission\nL  US qt  Imp qt\n1.8  1.9  1.6",
      "capacity": {
        "l": [
          1.8,
          1.8
        ],
        "qt_us": [
          1.9,
          1.9
        ],
        "qt_imp": [
          1.6,
          1.6
        ]
      },
      "document": {
        "id": "owners-2003",
        "tier": 1,
        "title": "2003 Mazda MX-5 Miata Owner’s Manual",
        "covers": [
          {
            "gen": "NB",
            "years": [
              2003,
              2003
            ],
            "engines": [
              "BP-Z3"
            ]
          }
        ],
        "url": "https://www.mazdausa.com/siteassets/pdf/owners-optimized/2003/mx5-miata/2003-mx-5-miata-owners-manual.pdf"
      }
    },
    {
      "source": "owners-2003",
      "page": "10-4",
      "as_printed": "Any temperature\nAPI Service GL-4 or GL-5\nSAE 75W-90\nAbove 10°C (50°F)\nAPI Service GL-4 or GL-5\nSAE 80W-90",
      "fluid": {
        "type": "Manual transmission gear oil",
        "viscosity": "SAE 75W-90 (any temperature); SAE 80W-90 above 10°C (50°F)",
        "standard": "API Service GL-4 or GL-5"
      },
      "document": {
        "id": "owners-2003",
        "tier": 1,
        "title": "2003 Mazda MX-5 Miata Owner’s Manual",
        "covers": [
          {
            "gen": "NB",
            "years": [
              2003,
              2003
            ],
            "engines": [
              "BP-Z3"
            ]
          }
        ],
        "url": "https://www.mazdausa.com/siteassets/pdf/owners-optimized/2003/mx5-miata/2003-mx-5-miata-owners-manual.pdf"
      }
    }
  ],
  "jobs": [
    "trans-fluid"
  ],
  "system": "transmission",
  "component": "transmission-fluids",
  "componentName": "Fluids & capacities",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/six-speed-transmission-oil-capacity-2003/"
}
```