2004 Subaru Legacy Oil Type & Capacity: 5W-30 (4.2 quarts)
The 2004 Subaru Legacy takes 5W-30 motor oil — 4.2 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.2 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| GT, 4D Sedan, EJ251, Automatic | API - SAE 5W-30 | 4.20 QTS. | — | — |
| GT, 4D Sedan, EJ251, Standard | API - SAE 5W-30 | 4.20 QTS. | — | — |
| GT, 4D Sedan, EJ259, Automatic | API - SAE 5W-30 | 4.20 QTS. | — | — |
| GT, 4D Sedan, EJ259, Standard | API - SAE 5W-30 | 4.20 QTS. | — | — |
| GT, 4D Wagon, EJ251, Automatic | API - SAE 5W-30 | 4.20 QTS. | — | — |
| GT, 4D Wagon, EJ251, Standard | API - SAE 5W-30 | 4.20 QTS. | — | — |
| GT, 4D Wagon, EJ259, Automatic | API - SAE 5W-30 | 4.20 QTS. | — | — |
| GT, 4D Wagon, EJ259, Standard | API - SAE 5W-30 | 4.20 QTS. | — | — |
| L, 4D Sedan, EJ251, Automatic | API - SAE 5W-30 | 4.20 QTS. | — | — |
| L, 4D Sedan, EJ251, Standard | API - SAE 5W-30 | 4.20 QTS. | — | — |
| L, 4D Sedan, EJ259, Automatic | API - SAE 5W-30 | 4.20 QTS. | — | — |
| L, 4D Sedan, EJ259, Standard | API - SAE 5W-30 | 4.20 QTS. | — | — |
| L, 4D Wagon, EJ251, Automatic | API - SAE 5W-30 | 4.20 QTS. | — | — |
| L, 4D Wagon, EJ251, Standard | API - SAE 5W-30 | 4.20 QTS. | — | — |
| L, 4D Wagon, EJ259, Automatic | API - SAE 5W-30 | 4.20 QTS. | — | — |
| L, 4D Wagon, EJ259, Standard | API - SAE 5W-30 | 4.20 QTS. | — | — |
More factory specs & repair guides for your Legacy
🛞 2004 Subaru Legacy Tire Size & Pressure →🌧️ 2004 Subaru Legacy Wiper Blade Sizes →💡 2004 Subaru Legacy Light Bulb Sizes →📖 2004 Subaru Legacy Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
7.1 quarts (6.71 L) — SUBARU Coolant or equivalent: a 50/50 mixture of Ethylene-Glycol Coolant and soft water
Frequently asked questions
What type of oil does a 2004 Subaru Legacy take?
The 2004 Subaru Legacy takes 5W-30 motor oil (API - SAE 5W-30), per the factory service manual.
What is the oil capacity of a 2004 Subaru Legacy?
The 2004 Subaru Legacy oil capacity is 4.2 quarts with a filter change.
How often should I change the oil in my 2004 Subaru Legacy?
Most 2004 Subaru Legacy 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 — Subaru recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2004 Subaru Legacy?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2004 Subaru Legacy. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.