1984 Pontiac Fiero Oil Type & Capacity: 5W-30 (4.0 quarts)
The 1984 Pontiac Fiero takes 5W-30 motor oil — 4.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, Automatic | SAE 5W-30 | 4.00 QTS. | — | API - SF/CC Energy Conserving. |
| Base, Standard, M19 | SAE 5W-30 | 4.00 QTS. | — | API - SF/CC Energy Conserving. |
| Base, Standard, MY8 | SAE 5W-30 | 4.00 QTS. | — | API - SF/CC Energy Conserving. |
| SE, Automatic | SAE 5W-30 | 4.00 QTS. | — | API - SF/CC Energy Conserving. |
| SE, Standard, M19 | SAE 5W-30 | 4.00 QTS. | — | API - SF/CC Energy Conserving. |
| SE, Standard, MY8 | SAE 5W-30 | 4.00 QTS. | — | API - SF/CC Energy Conserving. |
More factory specs & repair guides for your Fiero
🛞 1984 Pontiac Fiero Tire Size & Pressure →🌧️ 1984 Pontiac Fiero Wiper Blade Sizes →💡 1984 Pontiac Fiero Light Bulb Sizes →📖 1984 Pontiac Fiero Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
14.0 quarts (13.24 L) — 50/50 mixture of Ethylene Glycol Base Antifreeze and water. GM Specification 1825-M.
Frequently asked questions
What type of oil does a 1984 Pontiac Fiero take?
The 1984 Pontiac Fiero takes 5W-30 motor oil (SAE 5W-30), per the factory service manual.
What is the oil capacity of a 1984 Pontiac Fiero?
The 1984 Pontiac Fiero oil capacity is 4.0 quarts with a filter change.
How often should I change the oil in my 1984 Pontiac Fiero?
Most 1984 Pontiac Fiero 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 — Pontiac recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1984 Pontiac Fiero?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1984 Pontiac Fiero. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.