2004 Mazda MX-5 Miata Oil Type & Capacity: 10W-30 (4.0 quarts)
The 2004 Mazda MX-5 Miata takes 10W-30 motor oil — 4.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
10W-30 — 4.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, Automatic | API - SAE 10W-30 | 4.00 QTS. | 3.80 QTS. | "SG","SH", "SJ", or "ILSAC" must be on the label. |
| Base, Standard | API - SAE 10W-30 | 4.00 QTS. | 3.80 QTS. | "SG","SH", "SJ", or "ILSAC" must be on the label. |
| LS, Automatic | API - SAE 10W-30 | 4.00 QTS. | 3.80 QTS. | "SG","SH", "SJ", or "ILSAC" must be on the label. |
| LS, Standard, M15MD | API - SAE 10W-30 | 4.00 QTS. | 3.80 QTS. | "SG","SH", "SJ", or "ILSAC" must be on the label. |
| LS, Standard, Y16MD | API - SAE 10W-30 | 4.00 QTS. | 3.80 QTS. | "SG","SH", "SJ", or "ILSAC" must be on the label. |
| Mazdaspeed | API - SAE 10W-30 | 4.00 QTS. | 3.80 QTS. | "SG","SH", "SJ", or "ILSAC" must be on the label. |
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More factory specs & repair guides for your MX-5 Miata
🛞 2004 Mazda MX-5 Miata Tire Size & Pressure →🌧️ 2004 Mazda MX-5 Miata Wiper Blade Sizes →💡 2004 Mazda MX-5 Miata Light Bulb Sizes →📖 2004 Mazda MX-5 Miata Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
6.3 quarts (5.96 L) — MAZDA Premium Engine Coolant. Above 3Deg.F (-16Deg.C) use: 35/65 mixture of antifreeze and water, above -15Deg. F (26Deg.C) use: 45/55 mixture of antifreeze and water, above -40Deg.F (40Deg.C) use: 55/45 mixture of antifreeze and water.
Frequently asked questions
What type of oil does a 2004 Mazda MX-5 Miata take?
The 2004 Mazda MX-5 Miata takes 10W-30 motor oil (API - SAE 10W-30), per the factory service manual.
What is the oil capacity of a 2004 Mazda MX-5 Miata?
The 2004 Mazda MX-5 Miata oil capacity is 4.0 quarts with a filter change, or 3.8 quarts without changing the filter.
How often should I change the oil in my 2004 Mazda MX-5 Miata?
Most 2004 Mazda MX-5 Miata owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Mazda recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2004 Mazda MX-5 Miata?
Yes. 10W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2004 Mazda MX-5 Miata. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.