2005 Pontiac Aztek Oil Type & Capacity: 5W-30 (4.0 quarts)
The 2005 Pontiac Aztek takes 5W-30 motor oil — 4.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 4.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| Base, AWD | API - SAE 5W-30 | 4.00 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, FWD | API - SAE 5W-30 | 4.00 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. |
| Rally, AWD | API - SAE 5W-30 | 4.00 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. |
| Rally, FWD | API - SAE 5W-30 | 4.00 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 factory specs & repair guides for your Aztek
🛞 2005 Pontiac Aztek Tire Size & Pressure →🌧️ 2005 Pontiac Aztek Wiper Blade Sizes →💡 2005 Pontiac Aztek Light Bulb Sizes →📖 2005 Pontiac Aztek Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network 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 Aztek take?
The 2005 Pontiac Aztek takes 5W-30 motor oil (API - SAE 5W-30), per the factory service manual.
What is the oil capacity of a 2005 Pontiac Aztek?
The 2005 Pontiac Aztek oil capacity is 4.0 quarts with a filter change.
How often should I change the oil in my 2005 Pontiac Aztek?
Most 2005 Pontiac Aztek 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 2005 Pontiac Aztek?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2005 Pontiac Aztek. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.