1990 Mazda MX-5 Miata Oil Type & Capacity
The 1990 Mazda MX-5 Miata takes 5W-30 motor oil — 3.8 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 3.8 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Automatic | API - SG Energy Conserving II, SAE 5W-30 | 3.80 QTS. | — | — |
| Standard | API - SG Energy Conserving II, SAE 5W-30 | 3.80 QTS. | — | — |
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More specs & repair guides for your MX-5 Miata
1990 Mazda MX-5 Miata factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
6.3 quarts (5.96 L) — Ethylene Glycol Antifreeze 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 1990 Mazda MX-5 Miata take?
The 1990 Mazda MX-5 Miata takes 5W-30 motor oil (API - SG Energy Conserving II, SAE 5W-30), per the factory service manual.
How much oil does a 1990 Mazda MX-5 Miata take?
The 1990 Mazda MX-5 Miata holds 3.8 quarts with a filter change.
Can I use synthetic oil in my 1990 Mazda MX-5 Miata?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1990 Mazda MX-5 Miata. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.