2008 Pontiac G6 Oil Type & Capacity
The 2008 Pontiac G6 oil type depends on the engine: the Base, 2.4 B takes 5W-30 (5.0 quarts qt with filter); the Base, 3.5 N takes 5W-30 (4.0 quarts qt with filter); the GT, 2D Convertible, 3.5 N takes 5W-30 (4.0 quarts qt with filter); the GT, 2D Convertible, 3.9 1 takes 5W-30 (4.0 quarts qt with filter); the GT, 2D Coupe takes 5W-30 (4.0 quarts qt with filter); the GT, 4D Sedan takes 5W-30 (4.0 quarts qt with filter); the GXP, 2D Coupe takes 5W-30 (5.5 quarts qt with filter); the GXP, 4D Sedan takes 5W-30 (5.5 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base, 2.4 B: 5W-30, 5.0 quarts with filter
- Base, 3.5 N: 5W-30, 4.0 quarts with filter
- GT, 2D Convertible, 3.5 N: 5W-30, 4.0 quarts with filter
- GT, 2D Convertible, 3.9 1: 5W-30, 4.0 quarts with filter
- GT, 2D Coupe: 5W-30, 4.0 quarts with filter
- GT, 4D Sedan: 5W-30, 4.0 quarts with filter
- GXP, 2D Coupe: 5W-30, 5.5 quarts with filter
- GXP, 4D Sedan: 5W-30, 5.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, 2.4 B — 2.4L Eng | API - SAE 5W-30 | 5.00 QTS. | — | Use oil that meets GM Standard GM6094M. For areas of extreme cold, where temperatures fall below -20Deg.F (-29Deg.C), it is recommended a SAE 5W-30 synthetic oil or a SAE 10W-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures. |
| Base, 3.5 N — 3.5L Eng | API - SAE 5W-30 | 4.00 QTS. | 3.50 QTS. | Use oil that meets GM Standard GM6094M. For areas of extreme cold, where temperatures fall below -20Deg.F (-29Deg.C), it is recommended a SAE 5W-30 synthetic oil or a SAE 10W-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures. |
| GT, 2D Convertible, 3.5 N — 3.5L Eng | API - SAE 5W-30 | 4.00 QTS. | 3.50 QTS. | Use oil that meets GM Standard GM6094M. For areas of extreme cold, where temperatures fall below -20Deg.F (-29Deg.C), it is recommended a SAE 5W-30 synthetic oil or a SAE 10W-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures. |
| GT, 2D Convertible, 3.9 1 — 3.9L Eng | API - SAE 5W-30 | 4.00 QTS. | 3.50 QTS. | Use oil that meets GM Standard GM6094M. For areas of extreme cold, where temperatures fall below -20Deg.F (-29Deg.C), it is recommended a SAE 5W-30 synthetic oil or a SAE 10W-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures. |
| GT, 2D Coupe — 3.5L Eng | API - SAE 5W-30 | 4.00 QTS. | 3.50 QTS. | Use oil that meets GM Standard GM6094M. For areas of extreme cold, where temperatures fall below -20Deg.F (-29Deg.C), it is recommended a SAE 5W-30 synthetic oil or a SAE 10W-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures. |
| GT, 4D Sedan — 3.5L Eng | API - SAE 5W-30 | 4.00 QTS. | 3.50 QTS. | Use oil that meets GM Standard GM6094M. For areas of extreme cold, where temperatures fall below -20Deg.F (-29Deg.C), it is recommended a SAE 5W-30 synthetic oil or a SAE 10W-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures. |
| GXP, 2D Coupe — 3.6L Eng | API - SAE 5W-30 | 5.50 QTS. | 5.20 QTS. | Use oil that meets GM Standard GM6094M. For areas of extreme cold, where temperatures fall below -20Deg.F (-29Deg.C), it is recommended a SAE 5W-30 synthetic oil or a SAE 10W-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures. |
| GXP, 4D Sedan — 3.6L Eng | API - SAE 5W-30 | 5.50 QTS. | 5.20 QTS. | Use oil that meets GM Standard GM6094M. For areas of extreme cold, where temperatures fall below -20Deg.F (-29Deg.C), it is recommended a SAE 5W-30 synthetic oil or a SAE 10W-30 oil. Both will provide easier cold starting and better protection for your engine at extremely low temperatures. |
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More factory specs & repair guides for your G6
🛞 2008 Pontiac G6 Tire Size & Pressure →🌧️ 2008 Pontiac G6 Wiper Blade Sizes →💡 2008 Pontiac G6 Light Bulb Sizes →📖 2008 Pontiac G6 Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
7.3 quarts (6.9 L) — 50/50 mixture of DEX-COOL and clean, drinkable water. All capacities are approximate. When adding, be sure to fill to the approximate level. Recheck the fluid level after filling.
Frequently asked questions
What type of oil does a 2008 Pontiac G6 take?
It depends on the engine: Base, 2.4 B uses 5W-30; Base, 3.5 N uses 5W-30; GT, 2D Convertible, 3.5 N uses 5W-30; GT, 2D Convertible, 3.9 1 uses 5W-30; GT, 2D Coupe uses 5W-30; GT, 4D Sedan uses 5W-30; GXP, 2D Coupe uses 5W-30; GXP, 4D Sedan uses 5W-30.
What is the oil capacity of a 2008 Pontiac G6?
Oil capacity depends on the engine: Base, 2.4 B holds 5.0 quarts with filter; Base, 3.5 N holds 4.0 quarts with filter; GT, 2D Convertible, 3.5 N holds 4.0 quarts with filter; GT, 2D Convertible, 3.9 1 holds 4.0 quarts with filter; GT, 2D Coupe holds 4.0 quarts with filter; GT, 4D Sedan holds 4.0 quarts with filter; GXP, 2D Coupe holds 5.5 quarts with filter; GXP, 4D Sedan holds 5.5 quarts with filter.
How often should I change the oil in my 2008 Pontiac G6?
Most 2008 Pontiac G6 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 2008 Pontiac G6?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2008 Pontiac G6. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.