2005 Pontiac G6 Oil Type & Capacity
The 2005 Pontiac G6 takes 5W-30 motor oil — 4.5 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.5 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base | API - SAE 5W-30 | 4.50 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 | API - SAE 5W-30 | 4.50 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. |
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More specs & repair guides for your G6
2005 Pontiac G6 factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
9.6 quarts (9.08 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 2005 Pontiac G6 take?
The 2005 Pontiac G6 takes 5W-30 motor oil (API - SAE 5W-30), per the factory service manual.
How much oil does a 2005 Pontiac G6 take?
The 2005 Pontiac G6 holds 4.5 quarts with a filter change.
Can I use synthetic oil in my 2005 Pontiac G6?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2005 Pontiac G6. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.