1999 Pontiac Firefly Oil Type & Capacity: 5W-30 (3.5 quarts)
The 1999 Pontiac Firefly takes 5W-30 motor oil — 3.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 3.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 2D Hatchback, 1.0 6, Automatic | API- SAE 5W-30 | 3.50 QTS. | 3.20 QTS. | If the vehicle will be in an area where the temperature falls below -20Deg.F(-29Deg.C), use either an SAE 5W-30 synthetic oil or an SAE 10W-30 oil. |
| 2D Hatchback, 1.0 6, Standard | API- SAE 5W-30 | 3.50 QTS. | 3.20 QTS. | If the vehicle will be in an area where the temperature falls below -20Deg.F(-29Deg.C), use either an SAE 5W-30 synthetic oil or an SAE 10W-30 oil. |
| 2D Hatchback, 1.3 2 | API- SAE 5W-30 | 3.50 QTS. | 3.20 QTS. | If the vehicle will be in an area where the temperature falls below -20Deg.F(-29Deg.C), use either an SAE 5W-30 synthetic oil or an SAE 10W-30 oil. |
| 4D Sedan, Automatic | API- SAE 5W-30 | 3.50 QTS. | 3.20 QTS. | If the vehicle will be in an area where the temperature falls below -20Deg.F(-29Deg.C), use either an SAE 5W-30 synthetic oil or an SAE 10W-30 oil. |
| 4D Sedan, Standard | API- SAE 5W-30 | 3.50 QTS. | 3.20 QTS. | If the vehicle will be in an area where the temperature falls below -20Deg.F(-29Deg.C), use either an SAE 5W-30 synthetic oil or an SAE 10W-30 oil. |
More factory specs & repair guides for your Firefly
🛞 1999 Pontiac Firefly Tire Size & Pressure →🌧️ 1999 Pontiac Firefly Wiper Blade Sizes →💡 1999 Pontiac Firefly Light Bulb Sizes →📖 1999 Pontiac Firefly Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
0.63 quarts (0.59 L) — 50/50 mixture of clean drinkable water (preferably distilled) and good quality Ethylene Glycol Base Coolant
Frequently asked questions
What type of oil does a 1999 Pontiac Firefly take?
The 1999 Pontiac Firefly takes 5W-30 motor oil (API- SAE 5W-30), per the factory service manual.
What is the oil capacity of a 1999 Pontiac Firefly?
The 1999 Pontiac Firefly oil capacity is 3.5 quarts with a filter change, or 3.2 quarts without changing the filter.
How often should I change the oil in my 1999 Pontiac Firefly?
Most 1999 Pontiac Firefly 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 1999 Pontiac Firefly?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1999 Pontiac Firefly. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.