2003 Mazda Protege5 Oil Type & Capacity
The 2003 Mazda Protege5 takes 10W-30 motor oil — 3.7 quarts with a filter change, per the factory service manual.
Factory-spec answer
10W-30 — 3.7 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Automatic | API - SAE 10W-30 | 3.70 QTS. | 3.50 QTS. | "SG","SH", "SJ", or "ILSAC" must be on the label. |
| Standard | API - SAE 10W-30 | 3.70 QTS. | 3.50 QTS. | "SG","SH", "SJ", or "ILSAC" must be on the label. |
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More specs & repair guides for your Protege5
2003 Mazda Protege5 factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
7.9 quarts (7.47 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 2003 Mazda Protege5 take?
The 2003 Mazda Protege5 takes 10W-30 motor oil (API - SAE 10W-30), per the factory service manual.
How much oil does a 2003 Mazda Protege5 take?
The 2003 Mazda Protege5 holds 3.7 quarts with a filter change, or 3.5 quarts without changing the filter.
Can I use synthetic oil in my 2003 Mazda Protege5?
Yes. 10W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2003 Mazda Protege5. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.