Pontiac G8 Oil Type & Capacity
GarageDex's oil-spec data shows the Pontiac G8 takes 0W-30 engine oil, about 7.1-8.8 qt with a filter change, on 2009 models. Older ones take a different grade - 2008 models use 5W-30 (7.1-8.8 qt) - so check your year in the table below.
Oil by model year
| Model years | Oil type | Capacity | Buy |
|---|---|---|---|
| 2009 | 0W-30 | 7.1-8.8 qt | Shop 0W-30 |
| 2008 | 5W-30 | 7.1-8.8 qt | Shop 5W-30 |
Capacity is with a filter change and can vary by engine - open your exact year below for the per-engine figures and our sources. Shop links go to Amazon, and we may earn a commission at no extra cost to you.
Every G8 year
Frequently asked
What kind of oil does a Pontiac G8 take?
GarageDex's oil-spec data shows the Pontiac G8 takes 0W-30 engine oil, about 7.1-8.8 qt with a filter change, on 2009 models. Older ones take a different grade - 2008 models use 5W-30 (7.1-8.8 qt) - so check your year in the table below.
How many quarts of oil does a Pontiac G8 take?
About 7.1-8.8 qt with a filter change on 2009 models, and 7.1-8.8 qt on 2008 models. Capacity varies by engine, so check your exact year for the per-engine figure - and finish on the dipstick rather than pouring in the full amount.
Does the oil type change by year on the Pontiac G8?
Yes. We record 2 different factory specs across the years we cover - 2009: 0W-30; 2008: 5W-30. Use the table above and confirm against your owner's manual.
Sources. The oil grade and capacity for 2 of 2 model years is checked against a cited source, most often AMSOIL lookup guide - 2009 Pontiac G8, 3.6L 6-cyl, AMSOIL lookup guide - 2009 Pontiac G8, 6.0L 8-cyl (L76) and AMSOIL lookup guide - 2009 Pontiac G8, 6.2L 8-cyl (LS3). Each year page lists its own sources.
Last verified 2026-06-21. Maintained by Matan B., who runs GarageDex. How we verify.