1984 Subaru GL Oil Type & Capacity: 5W-30 (4.2 quarts)
The 1984 Subaru GL takes 5W-30 motor oil — 4.2 quarts with a filter change, per the factory service manual.
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 2D Hardtop, 1.8 4, Automatic — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 2D Hardtop, 1.8 4, Standard — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 2D Hardtop, 1.8 5 — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 2D Hatchback, 1.8 4, Automatic — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 2D Hatchback, 1.8 4, Standard — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 2D Hatchback, 1.8 5 — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 4D Sedan, 1.8 4, Automatic — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 4D Sedan, 1.8 4, Standard — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 4D Sedan, 1.8 5 — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 4D Wagon, 1.8 4, Automatic — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 4D Wagon, 1.8 4, Standard — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 4D Wagon, 1.8 5, Automatic — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
| 4D Wagon, 1.8 5, Standard — 1.8L Eng | API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F) | 4.20 QTS. | — | — |
More factory specs & repair guides for your GL
🛞 1984 Subaru GL Tire Size & Pressure →🌧️ 1984 Subaru GL Wiper Blade Sizes →💡 1984 Subaru GL Light Bulb Sizes →📖 1984 Subaru GL Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
5.8 quarts (5.48 L) — Anti-freeze and Anticorrosive Ethylene-Glycol Coolant
Frequently asked questions
What type of oil does a 1984 Subaru GL take?
The 1984 Subaru GL takes 5W-30 motor oil (API - SAE 5W-30 (Below -30Deg.F to -5Deg.F), 10W-30/40/50 (Below -30Deg.F to 90Deg.F), 30, 20W-40/50 (30Deg.F to 90Deg.F), 40 (Above 90Deg.F)), per the factory service manual.
What is the oil capacity of a 1984 Subaru GL?
The 1984 Subaru GL oil capacity is 4.2 quarts with a filter change.
How often should I change the oil in my 1984 Subaru GL?
Most 1984 Subaru GL 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 1984 Subaru GL?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1984 Subaru GL. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.