1999 Subaru Legacy Oil Type & Capacity: 5W-30 (4.7 quarts)
The 1999 Subaru Legacy takes 5W-30 motor oil — 4.7 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.7 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Brighton, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| Brighton, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT Limited, 2.5 6, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT Limited, 2.5 6, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT Limited, 2.5, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT Limited, 2.5, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT, 4D Sedan, 2.5 6, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT, 4D Sedan, 2.5 6, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT, 4D Sedan, 2.5, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT, 4D Sedan, 2.5, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT, 4D Wagon, 2.5 6, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT, 4D Wagon, 2.5 6, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT, 4D Wagon, 2.5, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| GT, 4D Wagon, 2.5, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| L 30th Anniversary, 4D Sedan | API - SAE 5W-30 | 4.70 QTS. | — | — |
| L 30th Anniversary, 4D Wagon | API - SAE 5W-30 | 4.70 QTS. | — | — |
| L, 4D Sedan, 2.2 4, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| L, 4D Sedan, 2.2 4, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| L, 4D Sedan, 2.5 | API - SAE 5W-30 | 4.70 QTS. | — | — |
| L, 4D Wagon, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| L, 4D Wagon, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| Limited 30th Anniversary, 2.2 4 | API - SAE 5W-30 | 4.70 QTS. | — | — |
| Limited 30th Anniversary, 2.5 | API - SAE 5W-30 | 4.70 QTS. | — | — |
| Outback Limited, 2.5 6, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| Outback Limited, 2.5 6, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| Outback Limited, 2.5, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| Outback Limited, 2.5, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| Outback, 2.5 6, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| Outback, 2.5 6, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| Outback, 2.5, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| Outback, 2.5, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| SUS Limited, 2.5 6, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| SUS Limited, 2.5 6, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| SUS Limited, 2.5, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| SUS Limited, 2.5, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| SUS, 2.5 6, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| SUS, 2.5 6, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
| SUS, 2.5, Automatic | API - SAE 5W-30 | 4.70 QTS. | — | — |
| SUS, 2.5, Standard | API - SAE 5W-30 | 4.70 QTS. | — | — |
Complete Oil Change Bundle for 1999 Subaru Legacy
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More factory specs & repair guides for your Legacy
🛞 1999 Subaru Legacy Tire Size & Pressure →🌧️ 1999 Subaru Legacy Wiper Blade Sizes →💡 1999 Subaru Legacy Light Bulb Sizes →📖 1999 Subaru Legacy 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) — 50/50 mixture of Ethylene Glycol Antifreeze and water
Frequently asked questions
What type of oil does a 1999 Subaru Legacy take?
The 1999 Subaru Legacy takes 5W-30 motor oil (API - SAE 5W-30), per the factory service manual.
What is the oil capacity of a 1999 Subaru Legacy?
The 1999 Subaru Legacy oil capacity is 4.7 quarts with a filter change.
How often should I change the oil in my 1999 Subaru Legacy?
Most 1999 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 1999 Subaru Legacy?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1999 Subaru Legacy. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.