1990 Pontiac Grand Am Oil Type & Capacity: 5W-30 (5.0 quarts)
The 1990 Pontiac Grand Am takes 5W-30 motor oil — 5.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 5.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| LE, 2D Coupe, 2.3 D | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| LE, 2D Coupe, 2.5 U, Automatic | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| LE, 2D Coupe, 2.5 U, Standard | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| LE, 4D Sedan, 2.3 D | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| LE, 4D Sedan, 2.5 U, Automatic | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| LE, 4D Sedan, 2.5 U, Standard | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| SE, 2D Coupe, 2.3 A | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| SE, 2D Coupe, 2.3 D | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| SE, 4D Sedan, 2.3 A | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
| SE, 4D Sedan, 2.3 D | API - SAE 5W-30 | 5.00 QTS. | 4.00 QTS. | — |
More factory specs & repair guides for your Grand Am
🛞 1990 Pontiac Grand Am Tire Size & Pressure →🌧️ 1990 Pontiac Grand Am Wiper Blade Sizes →💡 1990 Pontiac Grand Am Light Bulb Sizes →📖 1990 Pontiac Grand Am Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
7.6 quarts (7.19 L) — 56/46 mixture of Ethylene Glycol Base Antifreeze and water. GM Specification 1825-M.
Frequently asked questions
What type of oil does a 1990 Pontiac Grand Am take?
The 1990 Pontiac Grand Am takes 5W-30 motor oil (API - SAE 5W-30), per the factory service manual.
What is the oil capacity of a 1990 Pontiac Grand Am?
The 1990 Pontiac Grand Am oil capacity is 5.0 quarts with a filter change, or 4.0 quarts without changing the filter.
How often should I change the oil in my 1990 Pontiac Grand Am?
Most 1990 Pontiac Grand Am 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 1990 Pontiac Grand Am?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1990 Pontiac Grand Am. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.