1990 Geo Metro Oil Type & Capacity: 5W-30 (3.7 quarts)
The 1990 Geo Metro takes 5W-30 motor oil — 3.7 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 3.7 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, 2D Hatchback, Automatic | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F) | 3.70 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| Base, 2D Hatchback, Standard | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F) | 3.70 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| Base, 4D Hatchback, Automatic | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F) | 3.70 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| Base, 4D Hatchback, Standard | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F) | 3.70 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| LSi, 2D Convertible, Automatic | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F) | 3.70 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| LSi, 2D Convertible, Standard | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F) | 3.70 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| LSi, 2D Hatchback, Automatic | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F) | 3.70 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| LSi, 2D Hatchback, Standard | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F) | 3.70 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| LSi, 4D Hatchback, Automatic | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F) | 3.70 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| LSi, 4D Hatchback, Standard | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F) | 3.70 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
| XFi | SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F) | 3.70 QTS. | — | Use oil that has been certified by the American Petroleum Institute. |
More factory specs & repair guides for your Metro
🛞 1990 Geo Metro Tire Size & Pressure →🌧️ 1990 Geo Metro Wiper Blade Sizes →💡 1990 Geo Metro Light Bulb Sizes →📖 1990 Geo Metro Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
4.1 quarts (3.88 L) — 50/50 mixture of Ethylene Glycol Base Antifreeze and water. GM Specification 1825-M.
Frequently asked questions
What type of oil does a 1990 Geo Metro take?
The 1990 Geo Metro takes 5W-30 motor oil (SAE 5W-30 (Below -20Deg.F to Above 100Deg.F) (Preferred), 10W-30 (Above 0Deg.F)), per the factory service manual.
What is the oil capacity of a 1990 Geo Metro?
The 1990 Geo Metro oil capacity is 3.7 quarts with a filter change.
How often should I change the oil in my 1990 Geo Metro?
Most 1990 Geo Metro 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 — Geo recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1990 Geo Metro?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1990 Geo Metro. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.