Oldsmobile Alero Oil Type & Capacity
GarageDex's oil-spec data shows the Oldsmobile Alero takes 5W-30 engine oil, about 4-5.1 qt with a filter change, on 2004 models. Older ones use the same grade but hold a different amount - 2002-2003 models take 4.5-5.1 qt - so check your year in the table below.
Oil by model year
| Model years | Oil type | Capacity | Buy |
|---|---|---|---|
| 2004 | 5W-30 | 4-5.1 qt | Shop 5W-30 |
| 2002-2003 | 5W-30 | 4.5-5.1 qt | Shop 5W-30 |
| 1999-2001 | 5W-30 | 4-4.5 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 Alero year
Frequently asked
What kind of oil does a Oldsmobile Alero take?
GarageDex's oil-spec data shows the Oldsmobile Alero takes 5W-30 engine oil, about 4-5.1 qt with a filter change, on 2004 models. Older ones use the same grade but hold a different amount - 2002-2003 models take 4.5-5.1 qt - so check your year in the table below.
How many quarts of oil does a Oldsmobile Alero take?
About 4-5.1 qt with a filter change on 2004 models, and 4.5-5.1 qt on 2002-2003 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 Oldsmobile Alero?
Yes. We record 3 different factory specs across the years we cover - 2004: 5W-30; 2002-2003: 5W-30; 1999-2001: 5W-30. Use the table above and confirm against your owner's manual.
Sources. The oil grade and capacity for 6 of 6 model years is checked against a cited source, most often cararac - Oldsmobile Alero, AMSOIL lookup guide - 2004 Oldsmobile Alero, 2.2L 4-cyl (L61) and AMSOIL lookup guide - 2004 Oldsmobile Alero, 3.4L 6-cyl. Each year page lists its own sources.
Last verified 2026-06-21. Maintained by Matan B., who runs GarageDex. How we verify.