# Differential oil specification & capacity (2004)

Canonical URL: https://miatatorque.com/spec/differential-oil-capacity-2004/

Applicability: NB 2004 (BP-Z3)

Confidence: fsm

1 L / 1.06 US qt / 0.88 Imp qt · Differential gear oil; API service GL 5; SAE 90

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": "differential-oil-capacity-2004",
  "name": "Differential oil specification & capacity (2004)",
  "aliases": [
    "Differential oil specification & capacity",
    "Differential oil type and capacity"
  ],
  "applies_to": [
    {
      "gen": "NB",
      "years": [
        2004,
        2004
      ],
      "engines": [
        "BP-Z3"
      ]
    }
  ],
  "kind": "capacity",
  "capacity": {
    "l": [
      1,
      1
    ],
    "qt_us": [
      1.06,
      1.06
    ],
    "qt_imp": [
      0.88,
      0.88
    ]
  },
  "fluid": {
    "type": "Differential gear oil",
    "viscosity": "SAE 90",
    "standard": "API service GL 5"
  },
  "procedure": {
    "notes": "Fill to the bottom/brim of the filler hole on level ground. Capacity is not permission to overfill."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-2004",
      "page": "PDF p. 1044",
      "as_printed": "Type: API service GL 5 SAE 90\nCapacity (Approximate quantity): 1.00 L {1.06 US qt, 0.88 Imp qt}",
      "capacity": {
        "l": [
          1,
          1
        ],
        "qt_us": [
          1.06,
          1.06
        ],
        "qt_imp": [
          0.88,
          0.88
        ]
      },
      "fluid": {
        "type": "Differential gear oil",
        "viscosity": "SAE 90",
        "standard": "API service GL 5"
      },
      "document": {
        "id": "fsm-2004",
        "tier": 1,
        "title": "2004 Mazda MX-5 Miata Workshop Manual (electronic manual capture)",
        "covers": [
          {
            "gen": "NB",
            "years": [
              2004,
              2004
            ],
            "engines": [
              "BP-Z3"
            ]
          }
        ],
        "note": "Normally aspirated BP procedures audited; turbo procedures are covered separately."
      }
    },
    {
      "source": "owners-2004",
      "page": "10-5",
      "as_printed": "Rear differential oil\nL  US qt  Imp qt\n1.0  1.1  0.9",
      "capacity": {
        "l": [
          1,
          1
        ],
        "qt_us": [
          1.1,
          1.1
        ],
        "qt_imp": [
          0.9,
          0.9
        ]
      },
      "document": {
        "id": "owners-2004",
        "tier": 1,
        "title": "2004 Mazda MX-5 Miata Owner’s Manual",
        "covers": [
          {
            "gen": "NB",
            "years": [
              2004,
              2004
            ],
            "engines": [
              "BP-Z3"
            ]
          }
        ],
        "url": "https://www.mazdausa.com/siteassets/pdf/owners-optimized/2004/mx5-miata/2004-mx-5-miata-owners-manual.pdf"
      }
    },
    {
      "source": "owners-2004",
      "page": "10-4",
      "as_printed": "API Service GL-5\nSAE 90",
      "fluid": {
        "type": "Differential gear oil",
        "viscosity": "SAE 90",
        "standard": "API Service GL-5"
      },
      "document": {
        "id": "owners-2004",
        "tier": 1,
        "title": "2004 Mazda MX-5 Miata Owner’s Manual",
        "covers": [
          {
            "gen": "NB",
            "years": [
              2004,
              2004
            ],
            "engines": [
              "BP-Z3"
            ]
          }
        ],
        "url": "https://www.mazdausa.com/siteassets/pdf/owners-optimized/2004/mx5-miata/2004-mx-5-miata-owners-manual.pdf"
      }
    }
  ],
  "jobs": [
    "diff-fluid"
  ],
  "system": "driveshaft-differential",
  "component": "driveshaft-differential-fluids",
  "componentName": "Fluids & capacities",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/differential-oil-capacity-2004/"
}
```