1999 Pontiac Firebird Oil Type & Capacity
The 1999 Pontiac Firebird oil type depends on the engine: the Base, 2D Convertible, Automatic takes 10W-30 (4.5 quarts qt with filter); the Base, 2D Convertible, Standard takes 10W-30 (4.5 quarts qt with filter); the Base, 2D Coupe, Automatic takes 10W-30 (4.5 quarts qt with filter); the Base, 2D Coupe, Standard takes 10W-30 (4.5 quarts qt with filter); the Formula, Automatic takes 10W-30 (5.5 quarts qt with filter); the Formula, Standard takes 10W-30 (5.5 quarts qt with filter); the Trans Am, 2D Convertible, Automatic takes 10W-30 (5.5 quarts qt with filter); the Trans Am, 2D Convertible, Standard takes 10W-30 (5.5 quarts qt with filter); the Trans Am, 2D Coupe, Automatic takes 10W-30 (5.5 quarts qt with filter); the Trans Am, 2D Coupe, Standard takes 10W-30 (5.5 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base, 2D Convertible, Automatic: 10W-30, 4.5 quarts with filter
- Base, 2D Convertible, Standard: 10W-30, 4.5 quarts with filter
- Base, 2D Coupe, Automatic: 10W-30, 4.5 quarts with filter
- Base, 2D Coupe, Standard: 10W-30, 4.5 quarts with filter
- Formula, Automatic: 10W-30, 5.5 quarts with filter
- Formula, Standard: 10W-30, 5.5 quarts with filter
- Trans Am, 2D Convertible, Automatic: 10W-30, 5.5 quarts with filter
- Trans Am, 2D Convertible, Standard: 10W-30, 5.5 quarts with filter
- Trans Am, 2D Coupe, Automatic: 10W-30, 5.5 quarts with filter
- Trans Am, 2D Coupe, Standard: 10W-30, 5.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, 2D Convertible, Automatic — 3.8L Eng | API - SAE 10W-30 | 4.50 QTS. | — | — |
| Base, 2D Convertible, Standard — 3.8L Eng | API - SAE 10W-30 | 4.50 QTS. | — | — |
| Base, 2D Coupe, Automatic — 3.8L Eng | API - SAE 10W-30 | 4.50 QTS. | — | — |
| Base, 2D Coupe, Standard — 3.8L Eng | API - SAE 10W-30 | 4.50 QTS. | — | — |
| Formula, Automatic — 5.7L Eng | API - SAE 10W-30 | 5.50 QTS. | — | — |
| Formula, Standard — 5.7L Eng | API - SAE 10W-30 | 5.50 QTS. | — | — |
| Trans Am, 2D Convertible, Automatic — 5.7L Eng | API - SAE 10W-30 | 5.50 QTS. | — | — |
| Trans Am, 2D Convertible, Standard — 5.7L Eng | API - SAE 10W-30 | 5.50 QTS. | — | — |
| Trans Am, 2D Coupe, Automatic — 5.7L Eng | API - SAE 10W-30 | 5.50 QTS. | — | — |
| Trans Am, 2D Coupe, Standard — 5.7L Eng | API - SAE 10W-30 | 5.50 QTS. | — | — |
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More factory specs & repair guides for your Firebird
🛞 1999 Pontiac Firebird Tire Size & Pressure →🌧️ 1999 Pontiac Firebird Wiper Blade Sizes →💡 1999 Pontiac Firebird Light Bulb Sizes →📖 1999 Pontiac Firebird Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
11.4 quarts (10.78 L) — 50/50 mixture of DEX-COOL and clean, drinkable water. After refill, the level must be checked. Add enough engine coolant so that the fluid is within the proper operating range.
Frequently asked questions
What type of oil does a 1999 Pontiac Firebird take?
It depends on the engine: Base, 2D Convertible, Automatic uses 10W-30; Base, 2D Convertible, Standard uses 10W-30; Base, 2D Coupe, Automatic uses 10W-30; Base, 2D Coupe, Standard uses 10W-30; Formula, Automatic uses 10W-30; Formula, Standard uses 10W-30; Trans Am, 2D Convertible, Automatic uses 10W-30; Trans Am, 2D Convertible, Standard uses 10W-30; Trans Am, 2D Coupe, Automatic uses 10W-30; Trans Am, 2D Coupe, Standard uses 10W-30.
What is the oil capacity of a 1999 Pontiac Firebird?
Oil capacity depends on the engine: Base, 2D Convertible, Automatic holds 4.5 quarts with filter; Base, 2D Convertible, Standard holds 4.5 quarts with filter; Base, 2D Coupe, Automatic holds 4.5 quarts with filter; Base, 2D Coupe, Standard holds 4.5 quarts with filter; Formula, Automatic holds 5.5 quarts with filter; Formula, Standard holds 5.5 quarts with filter; Trans Am, 2D Convertible, Automatic holds 5.5 quarts with filter; Trans Am, 2D Convertible, Standard holds 5.5 quarts with filter; Trans Am, 2D Coupe, Automatic holds 5.5 quarts with filter; Trans Am, 2D Coupe, Standard holds 5.5 quarts with filter.
How often should I change the oil in my 1999 Pontiac Firebird?
Most 1999 Pontiac Firebird 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 Firebird?
Yes. 10W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1999 Pontiac Firebird. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.