Checked oil specs by engine
2011 Kia Optima oil capacity, type & filter
The 2011 Kia Optima takes 4.9 qt of 5W-30 (2.0L 4-Cyl Turbo) and 5.1 qt of 5W-20 (2.4L 4-Cyl). Select your engine below before buying.
| Engine | Capacity | Oil Type | Filter |
|---|---|---|---|
| 2.0L 4-Cyl Turbo | 4.9 qt | 5W-30 | AMSOIL EA15K20 |
| 2.4L 4-Cyl | 5.1 qt | 5W-20 | Purolator L14459 |
Match one of 2 checked engine options before buying oil or a filter.
AMSOIL EA15K20 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.
Purolator L14459 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.
Search paths only — confirm your OEM viscosity spec and quantity before checkout.
Search paths only — confirm your OEM viscosity spec and quantity before checkout.
2011 Kia Optima oil specs: capacity conditions and filter notes
Check the door jamb sticker, owner's manual, or displacement badge on the engine cover. Match it to the engine options listed above before buying oil or a filter.
All listed filter part numbers are compatible alternatives for your vehicle. Choose any one brand, then confirm the exact part number at checkout.
With filter means the volume includes a new filter. Service fill is the typical drain-and-fill amount. Dry fill is for a fresh empty engine only.
Retailer fitment tools may use different data. Confirm oil capacity, viscosity, and filter part number before ordering.
Source coverage for the 2011 Kia Optima
Supported by Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager).
Supported by Pennzoil OATS and Castrol (Olyslager).
Supported by RockAuto, Purolator Part Finder, and AMSOIL Lookup.
5 checked source rows for the 2011 Kia Optima.
Before ordering for this 2011 Kia Optima
- Capacity
- 4.9 qt (Service fill)
- Oil type
- 5W-30
- Interval
- 5,000 mi / 6 mo
- Filter
- AMSOIL EA15K20
- Capacity
- 5.1 qt (Service fill)
- Oil type
- 5W-20
- Interval
- 7,500 mi / 12 mo
- Filter
- Purolator L14459
Source check: Last checked 2026-06-23 from Pennzoil OATS, AMSOIL Lookup, Purolator Part Finder, RockAuto, and Castrol (Olyslager).
Kia Optima oil specs by year
This table includes checked Kia Optima model years available in our database.
| Year | Capacity | Oil type | Filter |
|---|---|---|---|
| 2020 | 4.8 qt (multiple engines) | 10W-30 | AMSOIL EA15K20 |
| 2019 | 4.8 qt (multiple engines) | 10W-30 | AMSOIL EA15K20 |
| 2018 | 4.8 qt (multiple engines) | 5W-30 | AMSOIL EA15K20 |
| 2017 | 4.3 qt (multiple engines) | 10W-30 | AMSOIL EA15K20 |
| 2016 | 5.1 qt (multiple engines) | 10W-30 | AMSOIL EA15K20 |
| 2015 | 5.1 qt (multiple engines) | 5W-30 | AMSOIL EA15K20 |
| 2014 | 5.3 qt (multiple engines) | 5W-30 | AMSOIL EA15K20 |
| 2013 | 4.9 qt (multiple engines) | 5W-30 | AMSOIL EA15K20 |
| 2012 | 4.9 qt (multiple engines) | 5W-30 | AMSOIL EA15K20 |
| 2011 Current page | 4.9 qt (multiple engines) | 5W-30 | AMSOIL EA15K20 |
| 2010 | 4.8 qt (multiple engines) | 5W-20 | AMSOIL EA15K20 |
| 2009 | 4.5 qt (multiple engines) | 10W-30 | AMSOIL EA15K20 |
| 2008 | 4.5 qt (multiple engines) | 5W-20 | AMSOIL EA15K20 |
| 2007 | 4.2 qt (multiple engines) | 5W-20 | AMSOIL EA15K20 |
| 2006 | 4.5 qt (multiple engines) | 10W-30 | AMSOIL EA15K20 |
How we verified 2011 Kia Optima oil data
How we verify fitmentChecked fitment data. Last checked: 2026-06-23.
This page checked 5 sources for the 2011 Kia Optima. The table lists which checked source contributed capacity, oil type, or filter evidence.
We checked leading oil brands and aftermarket filter catalogs so you don't have to.
- Confidence
- Cross-check pending
- Sources checked
- 5
- Last checked
- 2026-06-23
- Capacity: Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager)
- Oil type: Pennzoil OATS and Castrol (Olyslager)
- Filter: RockAuto, Purolator Part Finder, and AMSOIL Lookup
- Change interval: Pennzoil OATS and Castrol (Olyslager)
| Source | Supports | Checked | Link |
|---|---|---|---|
| Pennzoil OATS | Oil type, Capacity | 2026-06-23 | Visit brand site |
| AMSOIL Lookup | Capacity, Filter | 2026-06-23 | Visit brand site |
| Purolator Part Finder | Filter | 2026-06-23 | Visit brand site |
| RockAuto | Filter | 2026-06-23 | Checked source |
| Castrol (Olyslager) | Capacity, Oil type | 2026-06-23 | Visit brand site |
2011 Kia Optima maintenance checklist
One part checked. Look up the rest while you're here.
Where to buy
These are retailer search paths for your vehicle. The specs above are checked — use the retailer's vehicle selector at checkout to confirm before ordering.
This section may include affiliate or sponsored retailer links. They are purchase paths, not fitment evidence.
Walmart
Compare oil and filter listings for the 2011 Kia Optima. Confirm capacity, viscosity, and filter part number before checkout.
Search 2011 Kia Optima oil & filter →AutoZone
Use AutoZone's vehicle selector for the 2011 Kia Optima before checkout to confirm oil capacity, viscosity, and filter fitment.
Search 2011 Kia Optima oil & filter →Amazon
Search Amazon listings for the 2011 Kia Optima and check listing fitment notes against the specs above.
Search 2011 Kia Optima oil & filter →O'Reilly
Open O'Reilly's fitment search for the 2011 Kia Optima and verify oil capacity, viscosity, and filter part number before ordering.
Search 2011 Kia Optima oil & filter →Look up another vehicle
Find checked oil capacity, type, and filter data by exact year, make, and model.