2009 Pontiac G8 Oil Type & Capacity
The 2009 Pontiac G8 oil type depends on the engine: the Base takes 5W-30 (7.1 quarts with filter); the GT takes 5W-30 (8.0 quarts with filter); the GXP, Automatic takes 5W-30 (8.0 quarts with filter); the GXP, Standard takes 5W-30 (8.0 quarts with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- Base: 5W-30, 7.1 quarts with filter
- GT: 5W-30, 8.0 quarts with filter
- GXP, Automatic: 5W-30, 8.0 quarts with filter
- GXP, Standard: 5W-30, 8.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base — 3.6L Eng | API - SAE 5W-30 | 7.10 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 — 6.0L Eng | API - SAE 5W-30 | 8.00 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. |
| GXP, Automatic — 6.2L Eng | API - SAE 5W-30 | 8.00 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. |
| GXP, Standard — 6.2L Eng | API - SAE 5W-30 | 8.00 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. |
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More specs & repair guides for your G8
2009 Pontiac G8 factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
10.6 quarts (10.03 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 2009 Pontiac G8 take?
It depends on the engine: Base uses 5W-30; GT uses 5W-30; GXP, Automatic uses 5W-30; GXP, Standard uses 5W-30.
How much oil does a 2009 Pontiac G8 take?
Capacity depends on the engine: Base holds 7.1 quarts with filter; GT holds 8.0 quarts with filter; GXP, Automatic holds 8.0 quarts with filter; GXP, Standard holds 8.0 quarts with filter.
Can I use synthetic oil in my 2009 Pontiac G8?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2009 Pontiac G8. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.